Diện tích của một hình
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</div><p></p> <p style="text-align: center;"><img src="/uploads/tinymce/b32-h2-1667132064.jpg.webp" width="138" height="241" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-1" title="hinh-anh-dien-tich-cua-mot-hinh-2022-1" loading="lazy"></p> <p style="text-align: center;">Hình tam giác nằm hoàn toàn trong hình tứ giác.</p> <p style="text-align: center;">Hình <img src="/uploads/tinymce/b32-h3-1667133396.jpg.webp" width="26" height="22" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-2" title="hinh-anh-dien-tich-cua-mot-hinh-2022-2" loading="lazy"> và hình <img src="/uploads/tinymce/b32-h4-1667133421.jpg.webp" width="26" height="24" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-3" title="hinh-anh-dien-tich-cua-mot-hinh-2022-3" loading="lazy"> đều gồm 5 ô vuông như nhau.</p> <p style="text-align: center;">Các ô vuông như nhau. Đếm sô ô vuông mỗi hình.</p> <ul> <li>Diện tích hình tam giác bé hơn diện tích hình tứ giác.</li> <li>Diện tích hình&nbsp;<img style="text-align: center;" src="/uploads/tinymce/b32-h3-1667133396.jpg.webp" width="26" height="22" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-4" title="hinh-anh-dien-tich-cua-mot-hinh-2022-4" loading="lazy"> bằng diện tích hình&nbsp;<img style="text-align: center;" src="/uploads/tinymce/b32-h4-1667133421.jpg.webp" width="26" height="24" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-5" title="hinh-anh-dien-tich-cua-mot-hinh-2022-5" loading="lazy"><div> <div class="ads-horizontal-wrapped">
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</div>,</li> <li>Diện tích hình <img src="/uploads/tinymce/b32-h5-1667133547.jpg.webp" width="23" height="21" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-6" title="hinh-anh-dien-tich-cua-mot-hinh-2022-6" loading="lazy"> bằng tổng diện tích hai hình <img src="/uploads/tinymce/b32-h6-1667133573.jpg.webp" width="27" height="22" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-7" title="hinh-anh-dien-tich-cua-mot-hinh-2022-7" loading="lazy"> và <img src="/uploads/tinymce/b32-h7-1667133592.jpg.webp" width="19" height="22" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-8" title="hinh-anh-dien-tich-cua-mot-hinh-2022-8" loading="lazy">.</li> </ul> <h3 id="1-so-saacutenh-dien-tiacutech-mot-so-higravenh-phang-trong-bo-do-dugraveng-hoc-tap">1. So sánh diện tích một số hình phẳng trong bộ đồ dùng học tập.</h3> <p><span style="color: #3598db;">Mẫu:</span></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b32-h8-1667133690.jpg.webp" width="173" height="115" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-9" title="hinh-anh-dien-tich-cua-mot-hinh-2022-9" loading="lazy"></p> <ul> <li>Diện tích hình tam giác bé hơn diện tích hình tròn.</li> <li>Diện tích hình tròn lớn hơn diện tích hình tam giác.</li> </ul> <h3 id="2">2.</h3> <p>Quan sát các hình dưới đây.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b32-h9-1667133835.jpg.webp" width="291" height="156" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-10" title="hinh-anh-dien-tich-cua-mot-hinh-2022-10" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><p></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b32-h10-1667133848.jpg.webp" width="156" height="155" alt="hinh-anh-dien-tich-cua-mot-hinh-2022-11" title="hinh-anh-dien-tich-cua-mot-hinh-2022-11" loading="lazy"></p> <p>a)&nbsp;<strong>Mỗi hình gồm bao nhiêu ô vuông?</strong></p> <p>b)&nbsp;<strong>Lớn hơn, bé hơn hay bằng?</strong></p> <ul> <li>Diện tích hình B .?. diện tích hình A.</li> <li>Diện tích hình A .?. diện tích hình C.</li> <li>Diện tích hình B .?. diện tích hình C.</li> </ul> <p>c)&nbsp;<strong>Tổng hay hiệu?</strong></p> <ul> <li>Diện tích hình A bằng .?. diện tích hai hình B và C.</li> </ul>