Các số có bốn chữ số
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</div><p></p> <p><strong>Viết số:&nbsp;</strong>5 273</p> <p><strong>Đọc số:</strong> Năm nghìn hai trăm bảy mươi ba.</p> <p><strong>Viết số thành tổng:&nbsp;</strong>5 273 = 5 000 + 200 + 70 + 3</p> <h3 id="1-viet-so-doc-so-theo-mau">1. Viết số, đọc số (theo mẫu).</h3> <table style="border-collapse: collapse; width: 100.068%;" border="1"> <tbody> <tr> <td style="width: 14.491%; text-align: center;"><strong>Nghìn</strong></td> <td style="width: 14.491%; text-align: center;"><strong>Trăm</strong></td> <td style="width: 14.491%; text-align: center;"><strong>Chục</strong></td> <td style="width: 14.491%; text-align: center;"><strong>Đơn vị</strong></td> <td style="width: 14.491%; text-align: center;"><strong>Viết số</strong></td> <td style="width: 14.491%; text-align: center;"><strong>Đọc số</strong></td> </tr> <tr> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h2-1666965967.jpg.webp" width="72" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-1" title="hinh-anh-cac-so-co-bon-chu-so-1948-1" loading="lazy"></td> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h6-1666966224.jpg.webp" width="51" height="61" alt="hinh-anh-cac-so-co-bon-chu-so-1948-2" title="hinh-anh-cac-so-co-bon-chu-so-1948-2" loading="lazy"></td> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h8-1666966268.jpg.webp" width="66" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-3" title="hinh-anh-cac-so-co-bon-chu-so-1948-3" loading="lazy"></td> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h11-1666966326.jpg.webp" width="57" height="59" alt="hinh-anh-cac-so-co-bon-chu-so-1948-4" title="hinh-anh-cac-so-co-bon-chu-so-1948-4" loading="lazy"></td> <td style="width: 14.491%; text-align: center;">6 594</td> <td style="width: 14.491%; text-align: center;">sáu nghìn năm trăm chín mươi tư</td> </tr> <tr> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h3-1666966073.jpg.webp" width="73" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-5" title="hinh-anh-cac-so-co-bon-chu-so-1948-5" loading="lazy"><div> <div class="ads-horizontal-wrapped">
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</div></td> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h7-1666966254.jpg.webp" width="53" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-6" title="hinh-anh-cac-so-co-bon-chu-so-1948-6" loading="lazy"></td> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h9-1666966285.jpg.webp" width="67" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-7" title="hinh-anh-cac-so-co-bon-chu-so-1948-7" loading="lazy"></td> <td style="width: 14.491%; text-align: center;">&nbsp;</td> <td style="width: 14.491%; text-align: center;">.?.</td> <td style="width: 14.491%; text-align: center;">.?.</td> </tr> <tr> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h4-1666966094.jpg.webp" width="72" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-8" title="hinh-anh-cac-so-co-bon-chu-so-1948-8" loading="lazy"></td> <td style="width: 14.491%; text-align: center;">&nbsp;</td> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h10-1666966305.jpg.webp" width="67" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-9" title="hinh-anh-cac-so-co-bon-chu-so-1948-9" loading="lazy"></td> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h12-1666966350.jpg.webp" width="60" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-10" title="hinh-anh-cac-so-co-bon-chu-so-1948-10" loading="lazy"><div> <div class="ads-horizontal-wrapped">
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</div></td> <td style="width: 14.491%; text-align: center;">.?.</td> <td style="width: 14.491%; text-align: center;">.?.</td> </tr> <tr> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h5-1666966114.jpg.webp" width="85" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-11" title="hinh-anh-cac-so-co-bon-chu-so-1948-11" loading="lazy"></td> <td style="width: 14.491%; text-align: center;">&nbsp;</td> <td style="width: 14.491%; text-align: center;">&nbsp;</td> <td style="width: 14.491%; text-align: center;"><img src="/uploads/tinymce/b2-h13-1666966367.jpg.webp" width="71" height="60" alt="hinh-anh-cac-so-co-bon-chu-so-1948-12" title="hinh-anh-cac-so-co-bon-chu-so-1948-12" loading="lazy"></td> <td style="width: 14.491%; text-align: center;">.?.</td> <td style="width: 14.491%; text-align: center;">.?.</td> </tr> </tbody> </table> <h3 id="2-dugraveng-caacutec-the-img-src-uploadstinymceb1-1666966510jpgwebp-width-96-height-30-alt-hinh-anh-cac-so-co-bon-chu-so-1948-13-title-hinh-anh-cac-so-co-bon-chu-so-1948-13-loading-lazy-the-hien-so">2. Dùng các thẻ <img src="/uploads/tinymce/b1-1666966510.jpg.webp" width="96" height="30" alt="hinh-anh-cac-so-co-bon-chu-so-1948-13" title="hinh-anh-cac-so-co-bon-chu-so-1948-13" loading="lazy"> thể hiện số.</h3> <p style="padding-left: 40px;">a) 8 137&nbsp; &nbsp;b) 9 054&nbsp; &nbsp;c) 5 208</p> <h3 id="bagravei-tap-1-tigravem-caacutec-so-cograven-thieu-roi-doc-caacutec-so-trong-bang">Bài tập 1: Tìm các số còn thiếu rồi đọc các số trong bảng.</h3> <table style="border-collapse: collapse; width: 100.068%;" border="1"> <tbody> <tr> <td style="width: 7.83766%; text-align: center;">7 991</td> <td style="width: 7.83766%; text-align: center;">7 992</td> <td style="width: 7.83766%; text-align: center;">7 993</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">7 996</td> <td style="width: 7.83766%; text-align: center;">7 997</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">7 999</td> <td style="width: 7.85203%; text-align: center;">8 000</td> </tr> <tr> <td style="width: 7.83766%; text-align: center;">8 001</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">8 004</td> <td style="width: 7.83766%; text-align: center;">8 005</td> <td style="width: 7.83766%; text-align: center;">8 006</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">8 008</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.85203%; text-align: center;">.?.</td> </tr> <tr> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">8 012</td> <td style="width: 7.83766%; text-align: center;">8 013</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">8 017</td> <td style="width: 7.83766%; text-align: center;">.?.</td> <td style="width: 7.83766%; text-align: center;">8 019</td> <td style="width: 7.85203%; text-align: center;">.?.</td> </tr> </tbody> </table> <h3 id="bagravei-tap-2-viet-so">Bài tập 2: Viết số.</h3> <p>a) Chín nghìn tám trăm bốn mươi lăm.</p> <p>b) Bảy nghìn sáu trăm linh một.</p> <p>c) Bảy nghìn không trăm sáu mươi mốt.</p> <h3 id="bagravei-tap-3-viet-caacutec-so-thagravenh-tong-theo-mau">Bài tập 3: Viết các số thành tổng (theo mẫu).</h3> <p><span style="color: #3598db;">Mẫu: 4 207 = 4 000 + 200 + 7</span></p> <p style="padding-left: 40px;">a) 3 823&nbsp; &nbsp;b) 1 405&nbsp; &nbsp;c) 9 009</p> <h3 id="bagravei-tap-4-viet-caacutec-tong-thagravenh-so">Bài tập 4: Viết các tổng thành số.</h3> <p style="padding-left: 40px;">a) 5 000 + 400 + 30 + 6</p> <p style="padding-left: 40px;">b) 7 000 + 500 + 20</p> <p style="padding-left: 40px;">c) 4 000 + 8</p> <h3 id="bagravei-tap-5-so">Bài tập 5: Số ?</h3> <p>a) <img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b2-h14-1666967209.jpg.webp" width="489" height="56" alt="hinh-anh-cac-so-co-bon-chu-so-1948-14" title="hinh-anh-cac-so-co-bon-chu-so-1948-14" loading="lazy"></p> <p>b)</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b2-h15-1666967229.jpg.webp" width="491" height="55" alt="hinh-anh-cac-so-co-bon-chu-so-1948-15" title="hinh-anh-cac-so-co-bon-chu-so-1948-15" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><p></p> <p><strong>Khám phá</strong></p> <p>Vịnh Hạ Long là một trong 29 vịnh đẹp nhất thế giới, là di sản thiên nhiên thế giới.</p> <p>Vịnh Hạ Long có 1 969 hòn đảo lớn, nhỏ.</p> <p style="text-align: center;"><img src="/uploads/tinymce/b2-h16-1666967321.jpg.webp" width="263" height="170" alt="hinh-anh-cac-so-co-bon-chu-so-1948-16" title="hinh-anh-cac-so-co-bon-chu-so-1948-16" loading="lazy"></p> <p style="text-align: center;">Vịnh Hạ Long (tỉnh Quảng Ninh)</p>