Ôn tập về số và phép tính trong phạm vi 1000 (tiếp theo)
<h3 id="1-tiacutenh-nham">1. Tính nhẩm:</h3> <p>300 + 600</p> <p>500 - 400</p> <p>700+300</p> <p>1000 - 800&nbsp;</p> <p>400 +60 +30</p> <p>900 - 300 -50</p> <h3 id="2-tiacutenh-nham">2. Tính nhẩm:</h3> <p>2x7</p> <p>2x4</p> <p>2x8</p> <p>5x2</p> <p>5x9</p> <p>5x6</p> <p>12:2</p> <p>20;2</p> <p>15:5</p> <p>30:5</p> <p>50:5</p> <h3 id="3-xem-tranh-roi-viet-pheacutep-nhacircn-vagrave-pheacutep-chia-thiacutech-hop">3. Xem tranh rồi viết phép nhân và phép chia thích hợp:</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-224645-1665330414.png.webp" width="547" height="410" alt="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-0" title="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-0" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><p></p> <h3 id="4-so">4. Số?</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-224731-1665330460.png.webp" width="532" height="193" alt="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-1" title="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-1" loading="lazy"></p> <p>Mỗi xe đạp có 2 bánh xe:</p> <p>a) 2 xe đạp có <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-224827-1665330521.png.webp" width="35" height="35" alt="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-2" title="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-2" loading="lazy"> bánh xe.</p> <p>b) 5 xe đạp có <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-224827-1665330563.png.webp" width="37" height="37" alt="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-3" title="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-3" loading="lazy"> bánh xe.</p> <p>c) 6 xe đạp có <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-224827-1665330597.png.webp" width="34" height="34" alt="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-4" title="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-4" loading="lazy"> bánh xe.</p> <h3 id="5-nhagrave-nam-thu-hoach-duoc-20-qua-dua-hau">5. Nhà Nam thu hoạch được 20 quả dưa hấu.</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-225058-1665330680.png.webp" width="545" height="264" alt="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-5" title="hinh-anh-on-tap-ve-so-va-phep-tinh-trong-pham-vi-1000-tiep-theo-1513-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><p></p> <p>Trả lời các câu hỏi:</p> <p>a) Nếu chia đều vào 5 rổ thì mỗi rổ có mấy qủa dưa hấu?</p> <p>b) Nếu xếp vào mỗi rổ 5 quả dưa hấu thì cần mấy rổ?</p> <p>&nbsp;</p>