Bảng nhân 4
<p><strong>Tính các tích trong bảng nhân 4.</strong></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b27-h1-1666460471.jpg.webp" width="430" height="236" alt="hinh-anh-bang-nhan-4-1806-0" title="hinh-anh-bang-nhan-4-1806-0" 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 style="text-align: center;"><strong>4 x 1 = 4</strong><br>4 x 2 = 8<br>4 x 3 = 12<br>4 x 4 = 16<br><strong>4 x 5 = 20&nbsp;</strong><br>4 x 6 = 24<br>4 x 7 = 28<br>4 x 8 = 32<br>4 x 9 = 36<br><strong>4 x 10 = 40</strong></p> <h3 id="1-so">1. Số ?</h3> <p style="text-align: center;">4 → 8 → 12 → .?. → .?. → 24 → .?. → 32 → .?. → 40</p> <h3 id="2-do-caacutec-ban-pheacutep-nhacircn-trong-bang-nhacircn-4">2. Đố các bạn phép nhân trong bảng nhân 4.</h3> <h3 id="bagravei-tap-1-tiacutenh-nham">Bài tập 1: Tính nhẩm.</h3> <p>a) 4x2 ; 4x6 ; 4x8</p> <p>4x5 ; 4x9 ; 4x10</p> <p>b) 3x4 ; 5x4 ; 7x4</p> <p>6x4 ; 0x4 ; 10x4</p> <h3 id="bagravei-tap-2-so">Bài tập 2: Số ?</h3> <table style="border-collapse: collapse; width: 68.3663%;" border="1"> <tbody> <tr> <td style="width: 33.8639%;">Số con cừu</td> <td style="width: 16.4806%; text-align: center;">1</td> <td style="width: 16.7052%; text-align: center;">2</td> <td style="width: 16.0187%; text-align: center;">5</td> <td style="width: 16.7052%; text-align: center;">8</td> </tr> <tr> <td style="width: 33.8639%;">Số chân cừu</td> <td style="width: 16.4806%; text-align: center;">4</td> <td style="width: 16.7052%; text-align: center;">8</td> <td style="width: 16.0187%; text-align: center;">.?.</td> <td style="width: 16.7052%; text-align: center;">.?.</td> </tr> </tbody> </table> <h3 id="bagravei-tap-3-tiacutenh-bang-hai-caacutech">Bài tập 3: Tính bằng hai cách.</h3> <p><span style="color: #3598db;">Mẫu: 4 x 2 x 2</span></p> <p><span style="color: #3598db;">Cách 1: 4 x 2 x 2 = (4 x 2) x 2</span></p> <p style="padding-left: 120px;"><span style="color: #3598db;">= 8 x 2</span></p> <p style="padding-left: 120px;"><span style="color: #3598db;">= 16</span></p> <p><span style="color: #3598db;">Cách 2: 4 x 2 x 2 = 4 x (2 x 2)</span></p> <p style="padding-left: 120px;"><span style="color: #3598db;">= 4 x 4</span></p> <p style="padding-left: 120px;"><span style="color: #3598db;">= 16</span></p> <p>a) 3 x 2 x 2</p> <p>b) 5 x 2 x 4</p>