Bài 29: Phép Cộng Số Có Hai Chữ Số Với Số Có Một Chữ Số
<h3 id="khaacutem-phaacute">Khám phá</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/441-1662100204.png.webp" width="369" height="253" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-0" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-0" loading="lazy"></p><div> <div class="ads-horizontal-wrapped" style="height: auto !important; min-height: 0px !important;">
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</div><p></p> <table style="border-collapse: collapse; width: 11.2314%; height: 67.1874px;" border="1"> <tbody> <tr style="height: 22.3958px;"> <td style="width: 49.5771%; height: 22.3958px; text-align: center;">Chục</td> <td style="width: 50.4318%; height: 22.3958px; text-align: center;">Đơn vị</td> </tr> <tr style="height: 22.3958px;"> <td style="width: 49.5771%; height: 22.3958px; text-align: center;"> <p>4</p> <p>+</p> </td> <td style="width: 50.4318%; height: 22.3958px; text-align: center;"> <p>1</p> <p>5</p> </td> </tr> <tr style="height: 22.3958px;"> <td style="width: 49.5771%; height: 22.3958px; text-align: center;">4</td> <td style="width: 50.4318%; height: 22.3958px; text-align: center;">6</td> </tr> </tbody> </table> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/442-1662100318.png.webp" width="81" height="109" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-1" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-1" loading="lazy"></p> <ul> <li>1 cộng 5 bằng 6, viết 6.</li> <li>Hạ 4, viết 4.</li> </ul> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/443-1662100381.png.webp" width="370" height="256" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-2" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-2" loading="lazy"></p> <table style="border-collapse: collapse; width: 13.9233%;" border="1"> <tbody> <tr> <td style="width: 50%; text-align: center;">Chục</td> <td style="width: 50%; text-align: center;">Đơn vị</td> </tr> <tr> <td style="width: 50%; text-align: center;"> <p>2</p> <p>+</p> </td> <td style="width: 50%; text-align: center;"> <p>0</p> <p>4</p> </td> </tr> <tr> <td style="width: 50%; text-align: center;">2</td> <td style="width: 50%; text-align: center;">4</td> </tr> </tbody> </table> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/444-1662100456.png.webp" width="88" height="121" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-3" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-3" loading="lazy"></p> <ul> <li>0 cộng 4 bằng 4, viết 4.</li> <li>Hạ 2, viết 2.</li> </ul> <h3 id="hoat-dong">Hoạt động</h3> <h4>1. Tính:</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/451-1662100502.png.webp" width="403" height="138" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-4" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-4" loading="lazy"></p> <h4>2. Đặt rồi tính.</h4> <p>11 + 8; 71 + 5; 94 + 4</p> <h4>3. Tính rồi tìm thức ăn cho mỗi con vật.</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/452-1662100550.png.webp" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-5" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped" style="height: auto !important; min-height: 0px !important;">
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</div><p></p> <h3 id="luyen-tap">Luyện tập</h3> <h4>1. Đặt tính rồi tính.</h4> <p>42 + 4; 73 + 6; 34 + 5</p> <h4>2. Số?</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/461-1662100607.png.webp" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-6" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-6" loading="lazy"></p> <h4>3. Bạn Mai gấp được 25 chiếc thuyền giấy. Em Mi gấp được 3 chiếc thuyền giấy. Hỏi cả hai chị em gấp được bao nhiêu chiếc thuyền giấy?</h4> <p>... + ... = ...</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/462-1662100653.png.webp" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-7" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-7" loading="lazy"></p> <h4>4. Lá sen chỉ chở được 17 chú ếch con. Trên lá sen đang có 14 chú ếch con.</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/471-1662100688.png.webp" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-8" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-8" loading="lazy">Tìm đáp án cho hết ếch con lên lá sen.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/472-1662100711.png.webp" width="691" height="151" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-9" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-9" loading="lazy"></p> <h4>5. Lấy mỗi số trên vỏ sò màu xanh cộng với một số trên vỏ sò màu vàng để được một số trên vỏ sò màu cam. Tìm các phép tính đó.</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/473-1662100746.png.webp" alt="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-10" title="hinh-anh-bai-29-phep-cong-so-co-hai-chu-so-voi-so-co-mot-chu-so-337-10" loading="lazy"></p><div> <div class="ads-horizontal-wrapped" style="height: auto !important; min-height: 0px !important;">
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