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</div><p></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b48-h2-1666530262.jpg.webp" width="522" height="151" alt="hinh-anh-xem-dong-ho-1875-1" title="hinh-anh-xem-dong-ho-1875-1" loading="lazy"></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b48-h3-1666530277.jpg.webp" width="515" height="164" alt="hinh-anh-xem-dong-ho-1875-2" title="hinh-anh-xem-dong-ho-1875-2" loading="lazy"></p> <h3 id="1-moi-dong-ho-chi-may-gio">1. Mỗi đồng hồ chỉ mấy giờ?</h3> <p><span style="color: #3598db;">Mẫu:</span></p> <p style="text-align: center;"><span style="color: #3598db;"><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b48-h4-1666530325.jpg.webp" width="123" height="124" alt="hinh-anh-xem-dong-ho-1875-3" title="hinh-anh-xem-dong-ho-1875-3" loading="lazy">9&nbsp;giờ&nbsp;39&nbsp;phút<br>hay&nbsp;10&nbsp;giờ kém&nbsp;21&nbsp;phút.</span></p> <p style="text-align: center;"><img src="/uploads/tinymce/b48-h5-1666530388.jpg.webp" width="340" height="227" alt="hinh-anh-xem-dong-ho-1875-4" title="hinh-anh-xem-dong-ho-1875-4" loading="lazy"></p> <h3 id="2-xoay-kim-dong-ho-de-dong-ho-chi">2. Xoay kim đồng hồ để đồng hồ chỉ:</h3> <p>a) <strong>3</strong> giờ <strong>21 </strong>phút.</p> <p>b) <strong>7 </strong>giờ <strong>54 </strong>phút.</p> <p>c) <strong>11 </strong>giờ kém <strong>18 </strong>phút.</p> <h3 id="bagravei-tap-1-chon-dong-ho-phugrave-hop-voi-caacutech-doc">Bài tập 1: Chọn đồng hồ phù hợp với cách đọc.</h3> <p style="text-align: center;"><img src="/uploads/tinymce/b48-h6-1666530569.jpg.webp" width="125" height="239" alt="hinh-anh-xem-dong-ho-1875-5" title="hinh-anh-xem-dong-ho-1875-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><img src="/uploads/tinymce/b48-h7-1666530584.jpg.webp" width="127" height="240" alt="hinh-anh-xem-dong-ho-1875-6" title="hinh-anh-xem-dong-ho-1875-6" loading="lazy"><p></p> <p style="text-align: center;">A. <strong>3 </strong>giờ kém <strong>12 </strong>phút</p> <p style="text-align: center;">B. <strong>3 </strong>giờ <strong>18 </strong>phút</p> <p style="text-align: center;">C. <strong>10 </strong>giờ <strong>3 </strong>phút</p> <p style="text-align: center;">D. <strong>10 </strong>giờ <strong>21 </strong>phút</p> <h3 id="bagravei-tap-2nbsp">Bài tập 2:&nbsp;</h3> <p><strong>Vào một buổi chiều, hai đồng hồ nào chỉ cùng thời gian?</strong></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b48-h8-1666530774.jpg.webp" width="420" height="167" alt="hinh-anh-xem-dong-ho-1875-7" title="hinh-anh-xem-dong-ho-1875-7" loading="lazy"></p> <h3 id="bagravei-tap-3-so">Bài tập 3: Số ?</h3> <p><em>Mừng xuân mới, trường em tổ chức thi vẽ tranh với chủ đề "Đất nước em".</em></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b48-h11-1666530895.jpg.webp" width="136" height="106" alt="hinh-anh-xem-dong-ho-1875-8" title="hinh-anh-xem-dong-ho-1875-8" loading="lazy"></p> <p style="text-align: center;"><strong>Bắt đầu vẽ lúc:</strong></p> <p style="text-align: center;"><strong><img src="/uploads/tinymce/b48-h9-1666530923.jpg.webp" width="122" height="86" alt="hinh-anh-xem-dong-ho-1875-9" title="hinh-anh-xem-dong-ho-1875-9" loading="lazy"></strong></p> <p style="text-align: center;"><strong>Vẽ xong tranh lúc:</strong></p> <p style="text-align: center;"><img src="/uploads/tinymce/b48-h10-1666530953.jpg.webp" width="293" height="113" alt="hinh-anh-xem-dong-ho-1875-10" title="hinh-anh-xem-dong-ho-1875-10" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><p></p> <p>a) Chúng em bắt đầu vẽ lúc .?. giờ.</p> <p>b) Lớp 2A vẽ xong lúc .?. giờ .?. phút.<br>&nbsp; &nbsp; Lớp 2B vẽ xong lúc .?. giờ .?. phút.</p> <p>c) Thời gian lớp 2A vẽ nhanh hơn lớp 2B là .?. phút.</p>