Yuk, kita belajar tentang bilangan bulat, mulai dari pengertian, contoh, cara membandingkan, hingga cara mengurutkan bilangan bulat, di artikel Matematika kelas 7 berikut ini!
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Dalam pelajaran Matematika, kamu pasti udah nggak asing lagi dengan istilah “bilangan”, kan? Bilangan adalah suatu konsep matematika yang memberikan nilai jumlah terhadap sesuatu yang dihitung. Hal ini yang membuat bilangan digunakan dalam pengukuran dan pencacahan.
Nah, suatu bilangan punya yang namanya simbol atau lambang. Simbol ini, kita sebut sebagai angka.
Baca Juga: Mengenal Bilangan Prima, Bisa Jaga Pesan Rahasiamu, Lho!
Misalnya nih, bilangan enam dapat kita lambangkan menggunakan angka “6” atau “VI” dalam angka romawi.
Bilangan itu banyak sekali macamnya. Ada bilangan kompleks, real, imajiner, rasional, irasional, bulat, pecahan, cacah, asli, dan masih banyak lagi, ya.
Baca Juga: Jenis-Jenis Bilangan Pecahan dan Contohnya
Nah, di artikel kali ini, kita akan fokus membahas mengenai bilangan bulat. Seperti apa sih bilangan bulat itu? Bagaimana ya cara membandingkan dan mengurutkan bilangan bulat? Yuk, kita cari tau sama-sama jawabannya lewat artikel ini!
Pengertian Bilangan Bulat
Sebelumnya, kakak mau tanya dulu nih, kamu tahu nggak, apa itu bilangan bulat? Eits, bilangan bulat bukan berarti kumpulan atau himpunan bilangan yang bentuknya bulat, ya. Hehehehe…
Bilangan bulat adalah kumpulan atau himpunan bilangan yang nilainya bulat. Himpunan bilangan bulat dalam matematika dilambangkan dengan Z. Lambang ini berasal dari bahasa Jerman, yaitu Zahlen yang berarti bilangan.
Baca Juga: Pengertian dan Rumus Menghitung Bruto, Netto, Tara
Jenis-Jenis Bilangan Bulat
Jenis bilangan bulat terdiri dari bilangan cacah dan bilangan bulat negatif. Kita bahas satu persatu masing-masing contohnya, ya.
1. Bilangan Cacah
Bilangan cacah adalah himpunan bilangan yang terdiri dari bilangan nol dan bilangan bulat positif. Bilangan cacah juga sering disebut dengan bilangan bulat yang ‘bukan negatif’. Jadi, bilangan cacah itu isinya positif semua.
Lambang bilangan cacah adalah W yang memiliki kepanjangan Whole Numbers, yang artinya himpunan bilangan cacah. Contoh bilangan cacah, antara lain 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, …, dst.
2. Bilangan Nol
Sama seperti namanya, bilangan nol adalah bilangan yang berarti kosong. Bilangan ini merupakan bagian dari bilangan cacah, dan hanya terdiri dari satu bilangan, yaitu 0 (nol).
3. Bilangan Bulat Positif (Bilangan Asli)
Bilangan bulat positif atau bisa disebut sebagai bilangan asli, adalah himpunan bilangan bulat yang bernilai positif. Bilangan bulat positif juga merupakan bagian dari bilangan cacah, ya.
Bilangan asli dilambangkan dengan N yang memiliki kepanjangan Natural Numbers, atau artinya himpunan bilangan asli. Contoh bilangan asli, yaitu 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, …, dst.
4. Bilangan Bulat Negatif
Sementara itu, bilangan bulat negatif adalah himpunan bilangan bulat yang bernilai negatif. Jadi, kebalikan dari bilangan asli, ya. Contoh bilangan bulat negatif, di antaranya …, -5, -4, -3, -2, -1.
Nah, bilangan asli terbagi lagi menjadi bilangan ganjil, genap, prima, dan komposit.
5. Bilangan Ganjil
Bilangan ganjil adalah himpunan bilangan yang bukan kelipatan dua atau nilainya nggak habis jika dibagi 2.
6. Bilangan Genap
Kebalikannya, bilangan genap adalah himpunan bilangan kelipatan 2 atau nilainya akan habis jika dibagi 2.
Contohnya nih, 8 merupakan bilangan genap karena kalo kita bagi dengan 2, nilainya akan habis atau nggak punya sisa. Beda lagi dengan 13. Coba, 13 bisa dibagi 2 nggak?
Jawabannya bisa, tapi nilainya nggak habis. Berarti, 13 bukan kelipatan 2. Itu tandanya, 13 termasuk bilangan ganjil.
Contoh bilangan ganjil = {…, -7, -5, -3, -1, 1, 3, 5, 7, 9, …}
Contoh bilangan genap = {…, -6, -4, -2, 0, 2, 4, 6, 8, 10, …}
Lalu, bagaimana dengan bilangan prima dan komposit, ya?
7. Bilangan Prima
Bilangan prima adalah himpunan bilangan yang lebih besar dari 1 dan hanya bisa dibagi oleh 1 atau bilangan itu sendiri. Contohnya nih, 2 merupakan bilangan prima karena hanya bisa dibagi 1 dan bilangan itu sendiri, yaitu 2.
Sedangkan, 4 bukan bilangan prima karena selain bisa dibagi 1 dan 4, 4 juga bisa dibagi 2. Contoh bilangan prima lainnya adalah sebagai berikut:
Contoh bilangan prima = {2, 3, 5, 7, 11, 13, …}
8. Bilangan Komposit
Nah, kalo bilangan yang nilainya lebih besar dari 1 dan bukan termasuk bilangan prima, berarti bilangan tersebut merupakan bilangan komposit. Contohnya, 4 tadi. Bilangan 4 lebih besar dari 1 dan bukan bilangan prima karena bisa dibagi 1, 2, dan 4.
Jadi, 4 termasuk bilangan komposit. Contoh lainnya ada 6. Bilangan 6 juga termasuk bilangan komposit karena nilainya lebih dari 1 dan bukan bilangan prima (bisa dibagi 1, 2, 3, dan 6).
Contoh bilangan komposit = {4, 6, 8, 9, 10, 12, …}
Perlu kamu perhatikan ya, bilangan prima dan komposit juga bisa merupakan bilangan ganjil dan genap. Contohnya 3, selain termasuk bilangan prima, 3 juga termasuk bilangan ganjil. Tapi, nggak semua bilangan ganjil itu termasuk bilangan prima, lho!
Oke, sekarang, kamu udah tau ya apa itu bilangan bulat dan contoh-contohnya. Coba deh kamu tebak, himpunan bilangan di bawah ini termasuk ke dalam bilangan apa, ya?
Cara Membandingkan Bilangan Bulat
Membandingkan bilangan bulat, berarti menentukan apakah suatu bilangan bulat memiliki nilai lebih besar, lebih kecil, atau sama dengan bilangan bulat yang lain. Dalam membandingkan bilangan bulat, kita bisa menuliskannya menggunakan lambang-lambang berikut ini:
Misalkan, a dan b merupakan bilangan bulat.
- Jika a lebih besar dari b, maka bisa ditulis a > b
- Jika a lebih kecil dari b, maka bisa ditulis a < b
- Jika a sama dengan b, maka bisa ditulis a = b
Cara Mengurutkan Bilangan Bulat
Mengurutkan bilangan bulat, berarti menuliskan bilangan bulat tersebut secara urut dari nilai terkecil ke nilai terbesar atau sebaliknya. Pada garis bilangan, semakin ke kanan letak suatu bilangan, maka nilainya akan semakin besar. Sebaliknya, semakin ke kiri letak suatu bilangan, nilainya akan semakin kecil.
Itu tandanya, kalo pada bilangan bulat negatif, semakin besar bilangannya, berarti akan semakin kecil ya nilainya. Sementara itu, pada bilangan bulat positif, semakin besar bilangannya, semakin besar juga nilainya.
Baca Juga: Apa Saja Bagian-Bagian dari Properti Sudut?
Nah, supaya kamu semakin paham, coba kita kerjakan beberapa soal di bawah ini bersama-sama, ya!
Contoh Soal Bilangan Bulat
Urutkan bilangan-bilangan bulat berikut dari yang terkecil ke yang terbesar!
-3, 8, 13, -15, 1
Pembahasan:
Untuk memudahkan menjawab soal di atas, kamu harus ingat kalo bilangan positif nilainya selalu lebih besar dari bilangan negatif. Jadi, -3 dan -15 nilainya udah pasti lebih kecil dari 8, 13, dan 1, ya.
Nah, karena yang diminta soal adalah urutan bilangan dari yang terkecil, berarti kita tentukan nih, antara -3 dan -15, bilangan mana yang nilainya paling kecil. Kamu bisa buat garis bilangannya supaya nggak bingung.
Ternyata, -15 terletak jauh di sebelah kiri -3. Itu tandanya, -15 lebih kecil dari -3, atau bisa kita tulis -15 < -3. Kalo kita buat urutannya, berarti begini:
-15 < -3 < … < … < …
Kemudian, kita lihat pada garis bilangan, 13 terletak paling kanan. Berarti, 13 merupakan bilangan yang paling besar.
-15 < -3 < … < … < 13
Tinggal cari deh perbandingan antara 1 dan 8. Ternyata, 1 lebih kecil dari 8, berarti 1 < 8.
-15 < -3 < 1 < 8 < 13
Jadi, urutan bilangan bulat dari yang terkecil ke yang terbesarnya adalah -15, -3, 1, 8, 13.
Gimana, paham sampai sini? Sekarang, coba kamu kerjakan soal di bawah ini sendiri. Kalo udah ketemu hasilnya, share di kolom komentar, ya!
Latihan Soal Bilangan Bulat
Urutkan bilangan bulat di bawah ini dari yang terbesar ke yang terkecil!
22, 67, 31, -28, -11, 0
Oke, itu dia penjelasan mengenai pengertian dan contoh bilangan bulat. Jadi, bilangan bulat itu terdiri dari bilangan bulat negatif dan bilangan cacah, yang mencakup bilangan nol dan bilangan asli.
Nah, kalo kamu mau pelajari materi bilangan lainnya, bisa baca-baca materi Matematika kelas 7 di blog Ruangguru, ya. Atau, kalo kamu mau tau materi bilangan bulat ini lebih lengkap lagi, misalnya materi tentang operasi bilangan bulat, bisa banget kok belajar dari ruangbelajar. Penasaran? Yuk, buruan gabung dengan klik banner di bawah ini!
Referensi:
As’ari A.R, Tohir M, Valentino E, Imron Z, Taufiq I. (2017) Matematika SMP/MTs Kelas VII Semester I. Pusat Kurikulum dan Perbukuan, Balitbang, Kemendikbud
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<h1 class="content-title">
Pengertian dan Contoh Bilangan Bulat | Matematika Kelas 7 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/hani-ammariah" class="">Hani Ammariah</a> </p>
<p class="content-info"><span>June 11, 2025 • </span> <span>7 minutes read</span></p>
<br />
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<p><span style="background-color: transparent;"><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/bilangan%20bulat.png" alt="pengertian bilangan bulat" /></span></p>
<blockquote>
<p style="text-align: center;"><span style="background-color: transparent;"><em style="text-align: center; background-color: transparent;">Yuk, kita belajar tentang bilangan bulat, mulai dari pengertian, contoh, cara membandingkan, hingga cara mengurutkan bilangan bulat, di </em></span><em><strong><a href="https://www.ruangguru.com/blog/c/matematika/matematika-smp-kelas-7">artikel Matematika kelas 7</a></strong></em><span style="background-color: transparent;"><em style="text-align: center; background-color: transparent;"> berikut ini!</em></span></p>
<p style="text-align: center;"><em>—</em></p>
</blockquote>
<p> </p>
<p style="text-align: justify;">Dalam pelajaran Matematika, kamu pasti <em>udah nggak</em> asing lagi dengan istilah “bilangan”, <em>kan</em>? <strong>Bilangan</strong> adalah suatu konsep matematika yang memberikan <strong>nilai jumlah</strong> terhadap sesuatu yang dihitung. Hal ini yang membuat bilangan digunakan dalam pengukuran dan pencacahan.</p>
<p style="text-align: justify;"><em>Nah</em>, suatu bilangan punya yang namanya simbol atau lambang. Simbol ini, kita sebut sebagai angka.</p>
<p><strong>Baca Juga: <a href="/blog/bilangan-prima" rel="noopener">Mengenal Bilangan Prima, Bisa Jaga Pesan Rahasiamu, Lho!</a></strong></p>
<p style="text-align: justify;">Misalnya <em>nih</em>, bilangan enam dapat kita lambangkan menggunakan angka “6” atau “VI” dalam <strong><a href="/blog/angka-romawi" rel="noopener">angka romawi</a></strong>.</p>
<p><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/sejarah%20bilangan.png" alt="sejarah bilangan" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Bilangan itu banyak sekali macamnya. Ada bilangan kompleks, real, imajiner, <strong><a href="/blog/matematika-kelas-7-mengenal-bilangan-rasional-dan-irasional" rel="noopener">rasional,</a> <a href="https://blog.ruangguru.com/matematika-kelas-7-mengenal-bilangan-rasional-dan-irasional">irasional</a></strong>, bulat, pecahan, cacah, asli, dan masih banyak lagi, ya.</p>
<p><strong>Baca Juga: <a href="/blog/jenis-jenis-bilangan-pecahan" rel="noopener">Jenis-Jenis Bilangan Pecahan dan Contohnya</a></strong></p>
<p style="text-align: justify;"><span style="background-color: transparent;"><em>Nah</em>, di artikel kali ini, kita akan fokus membahas mengenai bilangan bulat. Seperti apa <em>sih</em> bilangan bulat itu? Bagaimana ya cara membandingkan dan mengurutkan bilangan bulat? <em>Yuk</em>, kita cari <em>tau</em> sama-sama jawabannya lewat artikel ini!</span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Pengertian Bilangan Bulat</span></h2>
<p style="text-align: justify;">Sebelumnya, kakak mau tanya dulu nih, kamu tahu nggak, apa itu bilangan bulat? Eits, bilangan bulat bukan berarti kumpulan atau himpunan bilangan yang bentuknya bulat, ya. <em>Hehehehe</em>…</p>
<p style="text-align: justify;"><strong>Bilangan bulat adalah kumpulan atau himpunan bilangan yang nilainya bulat</strong>. Himpunan bilangan bulat dalam matematika dilambangkan dengan <strong>Z</strong>. Lambang ini berasal dari bahasa Jerman, yaitu Zahlen yang berarti bilangan.</p>
<p><strong>Baca Juga: <a href="/blog/pengertian-dan-rumus-menghitung-bruto-netto-dan-tara" rel="noopener">Pengertian dan Rumus Menghitung Bruto, Netto, Tara</a></strong></p>
<p> </p>
<h2><span style="font-size: 18pt;">Jenis-Jenis Bilangan Bulat</span></h2>
<p>Jenis bilangan bulat terdiri dari <strong>bilangan cacah dan bilangan bulat negatif</strong>. Kita bahas satu persatu masing-masing contohnya, ya.</p>
<p> </p>
<h3><span style="font-size: 14pt;">1. Bilangan Cacah</span></h3>
<p style="text-align: justify;"><strong>Bilangan cacah</strong> adalah himpunan bilangan yang terdiri dari <strong>bilangan nol dan bilangan bulat positif</strong>. Bilangan cacah juga sering disebut dengan <strong>bilangan bulat yang ‘bukan negatif’</strong>. Jadi, bilangan cacah itu isinya positif semua.</p>
<p style="text-align: justify;">Lambang bilangan cacah adalah <strong>W</strong> yang memiliki kepanjangan <em>Whole Numbers, </em>yang artinya himpunan bilangan cacah. Contoh bilangan cacah, antara lain 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, …, dst.</p>
<p> </p>
<h3><span style="font-size: 14pt;">2. Bilangan Nol</span></h3>
<p style="text-align: justify;">Sama seperti namanya, bilangan nol adalah <strong>bilangan yang berarti kosong</strong>. Bilangan ini merupakan bagian dari bilangan cacah, dan hanya terdiri dari satu bilangan, yaitu 0 (nol).</p>
<p> </p>
<h3><span style="font-size: 14pt;">3. Bilangan Bulat Positif (Bilangan Asli)</span></h3>
<p style="text-align: justify;"><strong>Bilangan bulat positif</strong> atau bisa disebut sebagai <strong>bilangan asli</strong>, adalah himpunan <strong>bilangan bulat yang bernilai positif</strong>. Bilangan bulat positif juga merupakan bagian dari bilangan cacah, ya.</p>
<p style="text-align: justify;"><strong>Bilangan asli dilambangkan dengan</strong> <strong>N</strong> yang memiliki kepanjangan <em>Natural Numbers</em>, atau artinya himpunan bilangan asli. Contoh bilangan asli, yaitu 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, …, dst.</p>
<p> </p>
<h3><span style="font-size: 14pt;">4. Bilangan Bulat Negatif</span></h3>
<p style="text-align: justify;">Sementara itu, <strong>bilangan bulat negatif</strong> adalah himpunan <strong>bilangan bulat yang bernilai negatif</strong>. Jadi, kebalikan dari bilangan asli, ya. Contoh bilangan bulat negatif, di antaranya …, -5, -4, -3, -2, -1.</p>
<p><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/pembagian%20bilangan%20bulat%20pada%20garis%20bilangan.png" alt="pembagian bilangan bulat pada garis bilangan" width="600" /></p>
<p> </p>
<p><em>Nah</em>, bilangan asli terbagi lagi menjadi bilangan ganjil, genap, prima, dan komposit.</p>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">5. Bilangan Ganjil</span></h3>
<p style="text-align: justify;"><strong>Bilangan ganjil</strong> adalah himpunan bilangan yang <strong>bukan kelipatan dua atau nilainya <em>nggak</em> habis jika dibagi 2</strong>.</p>
<p> </p>
<h3 style="text-align: justify;"><span style="font-size: 14pt;">6. Bilangan Genap</span></h3>
<p style="text-align: justify;">Kebalikannya, <strong>bilangan genap</strong> adalah himpunan <strong>bilangan kelipatan 2 atau nilainya akan habis jika dibagi 2</strong>.</p>
<p style="text-align: justify;">Contohnya <em>nih</em>, 8 merupakan bilangan genap karena <em>kalo</em> kita bagi dengan 2, nilainya akan habis atau <em>nggak</em> punya sisa. Beda lagi dengan 13. Coba, 13 bisa dibagi 2 <em>nggak</em>?</p>
<p style="text-align: justify;">Jawabannya bisa, tapi nilainya <em>nggak</em> habis. Berarti, 13 bukan kelipatan 2. Itu tandanya, 13 termasuk bilangan ganjil.<span style="background-color: transparent;"> </span></p>
<p style="text-align: center;">Contoh bilangan ganjil = {…, -7, -5, -3, -1, 1, 3, 5, 7, 9, …}</p>
<p style="text-align: center;">Contoh bilangan genap = {…, -6, -4, -2, 0, 2, 4, 6, 8, 10, …}</p>
<p style="text-align: justify;">Lalu, bagaimana dengan bilangan prima dan komposit, ya?</p>
<p> </p>
<h3><span style="font-size: 14pt;">7. Bilangan Prima</span></h3>
<p style="text-align: justify;"><strong>Bilangan prima</strong> adalah himpunan <strong>bilangan yang lebih besar dari 1 dan hanya bisa dibagi oleh 1 atau bilangan itu sendiri</strong>. Contohnya <em>nih</em>, 2 merupakan bilangan prima karena hanya bisa dibagi 1 dan bilangan itu sendiri, yaitu 2.</p>
<p style="text-align: justify;">Sedangkan, 4 bukan bilangan prima karena selain bisa dibagi 1 dan 4, 4 juga bisa dibagi 2. Contoh bilangan prima lainnya adalah sebagai berikut:</p>
<p style="text-align: center;">Contoh bilangan prima = {2, 3, 5, 7, 11, 13, …}</p>
<p> </p>
<h3><span style="font-size: 14pt;">8. Bilangan Komposit</span></h3>
<p style="text-align: justify;"><em>Nah</em>, <em>kalo</em> <strong>bilangan yang nilainya lebih besar dari 1 dan bukan termasuk bilangan prima</strong>, berarti bilangan tersebut merupakan <strong>bilangan komposit</strong>. Contohnya, 4 tadi. Bilangan 4 lebih besar dari 1 dan bukan bilangan prima karena bisa dibagi 1, 2, dan 4.</p>
<p style="text-align: justify;">Jadi, 4 termasuk bilangan komposit. Contoh lainnya ada 6. Bilangan 6 juga termasuk bilangan komposit karena nilainya lebih dari 1 dan bukan bilangan prima (bisa dibagi 1, 2, 3, dan 6).</p>
<p style="text-align: center;">Contoh bilangan komposit = {4, 6, 8, 9, 10, 12, …}</p>
<p style="text-align: justify;">Perlu kamu perhatikan ya, bilangan prima dan komposit juga bisa merupakan bilangan ganjil dan genap. Contohnya 3, selain termasuk bilangan prima, 3 juga termasuk bilangan ganjil. Tapi, <em>nggak</em> semua bilangan ganjil itu termasuk <strong><a href="/blog/bilangan-prima" rel="noopener">bilangan prima</a>,</strong> <em>lho</em>!</p>
<p style="text-align: justify;">Oke, sekarang, kamu <em>udah tau</em> ya apa itu bilangan bulat dan contoh-contohnya. Coba <em>deh</em> kamu tebak, himpunan bilangan di bawah ini termasuk ke dalam bilangan apa, ya?</p>
<p> </p>
<h2><span style="font-size: 18pt;">Cara Membandingkan Bilangan Bulat</span></h2>
<p style="text-align: justify;">Membandingkan bilangan bulat, berarti <strong>menentukan apakah suatu bilangan bulat memiliki nilai lebih besar, lebih kecil, atau sama dengan bilangan bulat yang lain</strong>. Dalam membandingkan bilangan bulat, kita bisa menuliskannya menggunakan lambang-lambang berikut ini:</p>
<p style="text-align: justify;">Misalkan, a dan b merupakan bilangan bulat.</p>
<ul>
<li>Jika a <strong>lebih besar</strong> dari b, maka bisa ditulis a <strong>></strong> b</li>
<li>Jika a <strong>lebih kecil</strong> dari b, maka bisa ditulis a <strong><</strong> b</li>
<li>Jika a <strong>sama dengan</strong> b, maka bisa ditulis a<strong> =</strong> b</li>
</ul>
<p> </p>
<h2><span style="font-size: 18pt;">Cara Mengurutkan Bilangan Bulat</span></h2>
<p style="text-align: justify;">Mengurutkan bilangan bulat, berarti <strong>menuliskan bilangan bulat tersebut secara urut</strong> <strong>dari nilai terkecil ke nilai terbesar atau sebaliknya</strong>. Pada garis bilangan, semakin ke kanan letak suatu bilangan, maka nilainya akan semakin besar. Sebaliknya, semakin ke kiri letak suatu bilangan, nilainya akan semakin kecil.</p>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/bilangan%20bulat%20positif%20dan%20negatif.png" alt="contoh bilangan bulat positif dan negatif" width="600" /></p>
<p> </p>
<p style="text-align: justify;">Itu tandanya, <em>kalo</em> pada bilangan bulat negatif, semakin besar bilangannya, berarti akan semakin kecil ya nilainya. Sementara itu, pada bilangan bulat positif, semakin besar bilangannya, semakin besar juga nilainya.</p>
<p><strong>Baca Juga: <a href="/blog/apa-saja-bagian-bagian-dari-properti-sudut" rel="noopener">Apa Saja Bagian-Bagian dari Properti Sudut?</a></strong></p>
<p style="text-align: justify;"><em>Nah</em>, supaya kamu semakin paham, coba kita kerjakan beberapa soal di bawah ini bersama-sama, ya!</p>
<p> </p>
<h2><span style="font-size: 18pt;">Contoh Soal Bilangan Bulat</span></h2>
<p style="text-align: justify;">Urutkan bilangan-bilangan bulat berikut dari yang terkecil ke yang terbesar!</p>
<p style="text-align: center;"><span style="font-size: 14pt;">-3, 8, 13, -15, 1</span></p>
<p style="text-align: justify;"><strong>Pembahasan:</strong></p>
<p style="text-align: justify;">Untuk memudahkan menjawab soal di atas, kamu harus ingat <em>kalo</em> bilangan positif nilainya selalu lebih besar dari bilangan negatif. Jadi, -3 dan -15 nilainya <em>udah</em> pasti lebih kecil dari 8, 13, dan 1, ya.</p>
<p style="text-align: justify;"><em>Nah</em>, karena yang diminta soal adalah urutan bilangan dari yang terkecil, berarti kita tentukan <em>nih</em>, antara -3 dan -15, bilangan mana yang nilainya paling kecil. Kamu bisa buat garis bilangannya supaya <em>nggak</em> bingung.</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/bilangan%20bulat.jpg" alt="bilangan bulat" width="600" /></p>
<p style="text-align: justify;">Ternyata, -15 terletak jauh di sebelah kiri -3. Itu tandanya, -15 lebih kecil dari -3, atau bisa kita tulis -15 < -3. <em>Kalo</em> kita buat urutannya, berarti begini:</p>
<p style="text-align: center;"><span style="font-size: 14pt;">-15 < -3 < … < … < …</span></p>
<p style="text-align: justify;">Kemudian, kita lihat pada garis bilangan, 13 terletak paling kanan. Berarti, 13 merupakan bilangan yang paling besar.</p>
<p style="text-align: center;"><span style="font-size: 14pt;">-15 < -3 < … < … < 13</span></p>
<p style="text-align: justify;">Tinggal cari <em>deh</em> perbandingan antara 1 dan 8. Ternyata, 1 lebih kecil dari 8, berarti 1 < 8.</p>
<p style="text-align: center;"><span style="font-size: 14pt;">-15 < -3 < 1 < 8 < 13</span></p>
<p style="text-align: justify;">Jadi, urutan bilangan bulat dari yang terkecil ke yang terbesarnya adalah -15, -3, 1, 8, 13.</p>
<p style="text-align: justify;">Gimana, paham sampai sini? Sekarang, coba kamu kerjakan soal di bawah ini sendiri. <em>Kalo udah</em> ketemu hasilnya, share di kolom komentar, ya!</p>
<p> </p>
<h2><span style="font-size: 18pt;">Latihan Soal Bilangan Bulat</span></h2>
<p style="text-align: justify;">Urutkan bilangan bulat di bawah ini dari yang terbesar ke yang terkecil!</p>
<p style="text-align: center;"><span style="font-size: 14pt;">22, 67, 31, -28, -11, 0</span></p>
<p> </p>
<p style="text-align: justify;">Oke, itu dia penjelasan mengenai pengertian dan contoh bilangan bulat. Jadi, bilangan bulat itu terdiri dari bilangan bulat negatif dan bilangan cacah, yang mencakup bilangan nol dan bilangan asli.</p>
<p style="text-align: justify;"><em>Nah</em>, <span style="font-style: italic;">kalo</span> kamu mau pelajari materi bilangan lainnya, bisa baca-baca materi Matematika kelas 7 di blog Ruangguru, ya. Atau, <span style="font-style: italic;">k</span><em>alo</em> kamu mau <em>tau</em> materi bilangan bulat ini lebih lengkap lagi, misalnya materi tentang operasi bilangan bulat, bisa banget <em>kok</em> belajar dari <strong><a href="https://www.ruangguru.com/ruangbelajar" target="_blank" rel="noopener">ruangbelajar</a></strong>. Penasaran? <em>Yuk</em>, buruan gabung dengan klik <em>banner</em> di bawah ini!</p>
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<p style="text-align: justify;"><strong>Referensi:</strong></p>
<p style="text-align: left;">As’ari A.R, Tohir M, Valentino E, Imron Z, Taufiq I. (2017) Matematika SMP/MTs Kelas VII Semester I. Pusat Kurikulum dan Perbukuan, Balitbang, Kemendikbud</p>
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<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>