Em làm được những gì? (5)
<h3 id="bagravei-tap-1-quan-saacutet-bang-nhacircn-chia">Bài tập 1: Quan sát bảng nhân, chia.</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b47-h1-1666524342.jpg.webp" width="430" height="310" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-0" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-0" 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>a) Hoàn thiện bảng</p> <p>b) Cách sử dụng bảng.</p> <p><span style="color: #3598db;">Ví dụ:&nbsp;</span></p> <p style="text-align: center;"><span style="color: #3598db;">4 x 6 = .?.</span></p> <p style="text-align: center;"><span style="color: #3598db;"><img src="/uploads/tinymce/b47-h2-1666524555.jpg.webp" width="88" height="70" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-1" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-1" loading="lazy"></span></p> <p style="text-align: center;"><span style="color: #3598db;">4 x 6 = 24</span></p> <p style="text-align: center;"><span style="color: #3598db;">24 : 4 = .?.</span></p> <p style="text-align: center;"><span style="color: #3598db;"><img src="/uploads/tinymce/b47-h3-1666524693.jpg.webp" width="82" height="70" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-2" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-2" loading="lazy"></span></p> <p style="text-align: center;"><span style="color: #3598db;">24 : 4 = 6</span></p> <p style="text-align: center;"><span style="color: #3598db;">24 : 6 = .?.</span></p> <p style="text-align: center;"><span style="color: #3598db;"><img src="/uploads/tinymce/b47-h4-1666524753.jpg.webp" width="82" height="70" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-3" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-3" loading="lazy"></span></p> <p style="text-align: center;"><span style="color: #3598db;">24 : 6 = 4</span></p> <p>Sử dụng bảng để tính.</p> <p>3x9 ; 7x8 ; 9x9</p> <p>36:4 ; 48:6 ; 100:10</p> <h3 id="bagravei-tap-2-so">Bài tập 2: Số ?</h3> <table style="border-collapse: collapse; width: 89.8747%; height: 67.1874px;" border="1"> <tbody> <tr style="height: 22.3958px;"> <td style="width: 42.8579%; height: 22.3958px;">Khối lượng gạo trong mỗi bao</td> <td style="width: 14.8285%; height: 22.3958px; text-align: center;">12 kg</td> <td style="width: 14.4668%; height: 22.3958px; text-align: center;">10 kg</td> <td style="width: 14.1051%; height: 22.3958px; text-align: center;">.?. kg</td> <td style="width: 13.5626%; height: 22.3958px; text-align: center;">6 kg</td> </tr> <tr style="height: 22.3958px;"> <td style="width: 42.8579%; height: 22.3958px;">Số bao gạo</td> <td style="width: 14.8285%; height: 22.3958px; text-align: center;">5 bao</td> <td style="width: 14.4668%; height: 22.3958px; text-align: center;">10 bao</td> <td style="width: 14.1051%; height: 22.3958px; text-align: center;">8 bao</td> <td style="width: 13.5626%; height: 22.3958px; text-align: center;">.?. bao</td> </tr> <tr style="height: 22.3958px;"> <td style="width: 42.8579%; height: 22.3958px;">Khối lượng gạo ở tất cả các bao</td> <td style="width: 14.8285%; height: 22.3958px; text-align: center;">60 kg</td> <td style="width: 14.4668%; height: 22.3958px; text-align: center;">.?. kg</td> <td style="width: 14.1051%; height: 22.3958px; text-align: center;">96 kg</td> <td style="width: 13.5626%; height: 22.3958px; text-align: center;">90 kg</td> </tr> </tbody> </table> <h3 id="bagravei-tap-3-chon-yacute-tra-loi-duacuteng">Bài tập 3: Chọn ý trả lời đúng.</h3> <p>a) Kết quả của phép nhân 141 x 7 là:</p> <p style="padding-left: 40px;">A. 787&nbsp; &nbsp;B. 887&nbsp; &nbsp;C. 987</p> <p>b) Kết quả của phép chia 98 : 8 là:</p> <p style="padding-left: 40px;">A. 11 (dư 2)</p> <p style="padding-left: 40px;">B. 12 (dư 2)</p> <p style="padding-left: 40px;">C. 13</p> <p>c) Số phần được tô màu của hình D viết là:</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b47-h5-1666525564.jpg.webp" width="330" height="108" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-4" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-4" loading="lazy"></p> <p style="text-align: center;">A. <img src="/uploads/tinymce/screenshot-2022-10-23-013250-1666525590.jpg.webp" width="16" height="40" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-5" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div>&nbsp; &nbsp;B. <img src="/uploads/tinymce/screenshot-2022-10-23-013317-1666525614.jpg.webp" width="18" height="39" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-6" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-6" loading="lazy">&nbsp; &nbsp;C. <img src="/uploads/tinymce/screenshot-2022-10-23-184745-1666525692.jpg.webp" width="21" height="40" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-7" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-7" loading="lazy"><p></p> <p>d) Quan sát các hình sau.</p> <p style="text-align: center;"><img src="/uploads/tinymce/b47-h6-1666525808.jpg.webp" width="279" height="150" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-8" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-8" loading="lazy"></p> <p style="text-align: center;"><img src="/uploads/tinymce/b47-h7-1666525839.jpg.webp" width="321" height="150" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-9" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-9" loading="lazy"></p> <p>Số ngôi sao của hình thứ mười là:</p> <p>A. 16&nbsp; &nbsp;B. 20&nbsp; &nbsp;C. 40</p> <h3 id="bagravei-tap-4-so">Bài tập 4: Số ?</h3> <p>Chiều dài cơ thể voọc chà vá chân nâu được tính từ đỉnh đầu đến chót đuôi. Voọc chà vá chân nâu thường có chiều dài cơ thể gấp 2 lần chiều dài đuôi của chúng.</p> <p>Nếu một con voọc chà vá chân nâu có đuôi dài 30 cm thì cơ thể con voọc đó dài khoảng .?. cm.</p> <p><strong>Đất nước em</strong></p> <p style="text-align: center;"><strong><img src="/uploads/tinymce/b47-h8-1666526163.jpg.webp" width="125" height="123" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-10" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-10" loading="lazy"></strong></p><div><strong> <div class="ads-horizontal-wrapped">
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</strong></div><p></p> <p style="text-align: center;"><em><span style="text-align: start;">Voọc chà vá chân nâu<br></span>(Bán đảo Sơn Trà, Đà Nẵng)</em></p> <h3 id="bagravei-tap-5-chuyen-doi-don-vi-theo-mau">Bài tập 5: Chuyển đổi đơn vị (theo mẫu).</h3> <p><span style="color: #3598db;">Mẫu: 6 cm 8 mm = 68 mm</span></p> <p><span style="color: #3598db;">( 6 cm = 60 mm</span></p> <p><span style="color: #3598db;">60 mm + 8 mm = 68 mm)</span></p> <p>a) 1 cm 7 mm = .?. mm</p> <p>3 cm 2 mm = .?. mm</p> <p>8 cm 6 mm = .?. mm</p> <p>b) 1 m 4 cm = .?. cm</p> <p>5 m 2 cm = .?. cm</p> <p>7 m 9 cm = .?. cm</p> <p><strong>Vui học</strong></p> <p>Mỗi chú kiến nâu dài 6 mm. Con sâu dài 2 cm 5 mm. 4 chú kiến nâu xếp nối đuôi thành một hàng dọc thì có dài hơn con sâu này không?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b47-h9-1666526589.jpg.webp" width="205" height="120" alt="hinh-anh-em-lam-duoc-nhung-gi-5-1869-11" title="hinh-anh-em-lam-duoc-nhung-gi-5-1869-11" loading="lazy"></p>