Ki- lô- mét
<p>Ki- lô- mét là một đơn vị đo độ dài, viết tắt là km.</p> <p>1 km = 1000 m</p> <p>1000 m = 1 km</p> <h3 id="1-chon-so-do-do-dagravei-thiacutech-hop">1. Chọn số đo độ dài thích hợp:</h3> <p>a) Cầu Nhật Tân dài khoảng:</p> <p><img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-190645-1665317214.png.webp" alt="hinh-anh-ki-lo-met-1494-0" title="hinh-anh-ki-lo-met-1494-0" 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. 4 m</p> <p>B. 4 km</p> <p>b) Xe buýt dài khoảng:</p> <p><img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-190729-1665317257.png.webp" width="220" height="107" alt="hinh-anh-ki-lo-met-1494-1" title="hinh-anh-ki-lo-met-1494-1" loading="lazy"></p> <p>A. 10 m</p> <p>B. 10 km</p> <h3 id="2nbsp">2.&nbsp;</h3> <p>a) Tính:</p> <p>200 km + 140 km</p> <p>2 km x 9</p> <p>160 km - 60 km</p> <p>45 km : 5</p> <p>b) <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-190930-1665317384.png.webp" width="54" height="71" alt="hinh-anh-ki-lo-met-1494-2" title="hinh-anh-ki-lo-met-1494-2" loading="lazy"></p> <p>1km ? 300 m + 600 m</p> <p>980 m + 10 m ? 1 km</p> <p>1000 m ? 1 km</p> <p>315 m + 683 m ? 1 km</p> <h3 id="3-doc-bang-sau-roi-tra-loi-caacutec-cacircu-hoi">3. Đọc bảng sau rồi trả lời các câu hỏi:</h3> <p>a) Trong các tuyến đường từ Hà Nội đi các tỉnh này, tuyến đường nào dài nhất?</p> <p>b) Từ Hà Nội đi Quảng Ninh xa hơn hay từ Hà Nội đi Vinh xa hơn?</p> <table style="border-collapse: collapse; width: 92.2997%; height: 111.945px; margin-left: auto; margin-right: auto;" border="1"> <tbody> <tr style="height: 22.3889px;"> <td style="width: 76.2069%; text-align: center; height: 22.3889px;">Quãng đường</td> <td style="width: 23.7952%; text-align: center; height: 22.3889px;">Dài khoảng</td> </tr> <tr style="height: 22.3889px;"> <td style="width: 76.2069%; text-align: center; height: 22.3889px;">Hà Nội- Vinh</td> <td style="width: 23.7952%; text-align: center; height: 22.3889px;">300 km</td> </tr> <tr style="height: 22.3889px;"> <td style="width: 76.2069%; text-align: center; height: 22.3889px;">Hà Nội- Lai Châu&nbsp;</td> <td style="width: 23.7952%; text-align: center; height: 22.3889px;">450 km</td> </tr> <tr style="height: 22.3889px;"> <td style="width: 76.2069%; text-align: center; height: 22.3889px;">Hà Nội- Quảng Ninh</td> <td style="width: 23.7952%; text-align: center; height: 22.3889px;">153 km</td> </tr> <tr style="height: 22.3889px;"> <td style="width: 76.2069%; text-align: center; height: 22.3889px;">Hà Nội- Thanh Hóa</td> <td style="width: 23.7952%; text-align: center; height: 22.3889px;">150 km</td> </tr> </tbody> </table> <h3 id="4-quan-saacutet-so-do-tra-loi-cacircu-hoi">4. Quan sát sơ đồ, trả lời câu hỏi:</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-191624-1665317792.png.webp" width="555" height="271" alt="hinh-anh-ki-lo-met-1494-3" title="hinh-anh-ki-lo-met-1494-3" loading="lazy"></p> <p>Tùng nói rằng: ''Quãng đường đi từ nhà mình đến nhà Hân dài 1 km.'' Theo em, Tùng nói có đúng không?</p> <h3 id="5-thuc-hagravenh">5. Thực hành:</h3> <p>Ước lượng quãng đường đi từ nhà em đến trường.</p> <p>&nbsp;</p>