Ôn tập các số đến 1000
<h3 id="1-so">1. Số ?</h3> <p>a)</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b1-h1-1666114408.jpg.webp" width="646" height="150" alt="hinh-anh-on-tap-cac-so-den-1000-1703-0" title="hinh-anh-on-tap-cac-so-den-1000-1703-0" loading="lazy"></p><div> <div class="ads-horizontal-wrapped" style="height: auto !important; min-height: 0px !important;">
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</div><p></p> <p>b)</p> <p style="text-align: center;"><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b1-h2-1666114430.jpg.webp" width="174" height="144" alt="hinh-anh-on-tap-cac-so-den-1000-1703-1" title="hinh-anh-on-tap-cac-so-den-1000-1703-1" loading="lazy"></p> <p style="text-align: center;">Viết số: .?.</p> <p style="text-align: center;"><img src="/uploads/tinymce/b1-h3-1666114471.jpg.webp" width="174" height="143" alt="hinh-anh-on-tap-cac-so-den-1000-1703-2" title="hinh-anh-on-tap-cac-so-den-1000-1703-2" loading="lazy"></p> <p style="text-align: center;">Viết số: .?.</p> <h3 id="2-viet-theo-mau">2. Viết theo mẫu.</h3> <p>a) Viết số thành tổng các trăm, chục, đơn vị.</p> <p>Mẫu: 729 = 700 + 20 + 9</p> <p>• 641&nbsp; • 830</p> <p>b) Viết tổng thành số.</p> <p>Mẫu: 200 + 80 + 3 = 283</p> <p>• 900 + 60 + 3 &nbsp;• 100 + 1</p> <h3 id="3-trograve-choinbspstrongemai-nhanh-honemstrong">3. Trò chơi&nbsp;<strong><em>Ai nhanh hơn?</em></strong></h3> <p>Hai nhóm học sinh, mỗi nhóm bốn bạn thực hiện hai nhiệm vụ:</p> <p>• Mỗi bạn trong nhóm viết một số theo yêu cầu của giáo viên.<br>Ví dụ: Viết số tròn chục có ba chữ số.</p><div class="google-auto-placed ap_container" style="width: 100%; height: auto; clear: both; text-align: center;"><ins data-ad-format="auto" class="adsbygoogle adsbygoogle-noablate" data-ad-client="ca-pub-8123786206223951" data-adsbygoogle-status="done" style="display: block; margin: auto; background-color: transparent; height: 280px;"><div id="aswift_4_host" style="border: none; height: 280px; width: 741px; margin: 0px; padding: 0px; position: relative; visibility: visible; background-color: transparent; display: inline-block;"></div></ins></div> <p>• Mỗi nhóm sắp xếp bốn số vừa viết theo thứ tự từ bé đến lớn. Nhóm nào hoàn thành đúng và nhanh thì được cả lớp vỗ tay khen thưởng.</p> <h3 id="bagravei-tap-1-lagravem-theo-mau">Bài tập 1: Làm theo mẫu.</h3> <table style="border-collapse: collapse; width: 88.5692%; margin-left: auto; margin-right: auto;" border="1"> <tbody> <tr> <td style="width: 41.3002%; text-align: center;">Đọc số</td> <td style="width: 16.1747%; text-align: center;">Viết số</td> <td style="width: 42.5243%; text-align: center;">Viết số thành tổng các trăm, chục, đơn vị</td> </tr> <tr> <td style="width: 41.3002%; text-align: center;">Bốn trăm bảy mươi lăm</td> <td style="width: 16.1747%; text-align: center;">475</td> <td style="width: 42.5243%; text-align: center;">400 + 70 + 5</td> </tr> <tr> <td style="width: 41.3002%; text-align: center;">Hai trăm ba mươi mốt</td> <td style="width: 16.1747%; text-align: center;">.?.</td> <td style="width: 42.5243%; text-align: center;">.?.</td> </tr> <tr> <td style="width: 41.3002%; text-align: center;">.?.</td> <td style="width: 16.1747%; text-align: center;">814</td> <td style="width: 42.5243%; text-align: center;">.?.</td> </tr> <tr> <td style="width: 41.3002%; text-align: center;">.?.</td> <td style="width: 16.1747%; text-align: center;">.?.</td> <td style="width: 42.5243%; text-align: center;">500 + 4</td> </tr> </tbody> </table> <h3 id="bagravei-tap-2-so">Bài tập 2: Số ?</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b1-h6-1666115388.jpg.webp" width="322" height="254" alt="hinh-anh-on-tap-cac-so-den-1000-1703-3" title="hinh-anh-on-tap-cac-so-den-1000-1703-3" loading="lazy"></p> <p style="text-align: center;"><img src="/uploads/tinymce/b1-h7-1666115405.jpg.webp" width="318" height="248" alt="hinh-anh-on-tap-cac-so-den-1000-1703-4" title="hinh-anh-on-tap-cac-so-den-1000-1703-4" loading="lazy"></p> <p style="text-align: center;"><img src="/uploads/tinymce/b1-h8-1666115428.jpg.webp" width="322" height="260" alt="hinh-anh-on-tap-cac-so-den-1000-1703-5" title="hinh-anh-on-tap-cac-so-den-1000-1703-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><p></p> <h3 id="bagravei-tap-3-so">Bài tập 3: Số ?</h3> <p>a)&nbsp;<strong>27&nbsp;</strong>hay&nbsp;<strong>33</strong>?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b1-h4-1666115486.jpg.webp" width="451" height="164" alt="hinh-anh-on-tap-cac-so-den-1000-1703-6" title="hinh-anh-on-tap-cac-so-den-1000-1703-6" loading="lazy"></p> <p>b)&nbsp;<strong>280&nbsp;</strong>hay&nbsp;<strong>320</strong>?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b1-h5-1666116418.jpg.webp" width="452" height="171" alt="hinh-anh-on-tap-cac-so-den-1000-1703-7" title="hinh-anh-on-tap-cac-so-den-1000-1703-7" loading="lazy"></p> <h3 id="bagravei-tap-4-cacircu-nagraveo-duacuteng-cacircu-nagraveo-sai">Bài tập 4: Câu nào đúng, câu nào sai?</h3> <p>a) 621 gồm 1 trăm, 2 chục và 6 đơn vị.</p> <p>b) 621 gồm 6 trăm, 2 chục và 1 đơn vị.</p> <p>c) 162, 216, 612, 621 là các số được sắp xếp theo thứ tự từ bé đến lớn.</p>