Ôn Tập
<h3 id="1">1.</h3> <p>a) Tìm các số còn thiếu rồi đọc những số đó:</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1681-1664865405.png.webp" width="584" height="110" alt="hinh-anh-on-tap-1230-0" title="hinh-anh-on-tap-1230-0" 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>b) Trong các số trên, số nào lớn nhất? Số nào bé nhất?</p> <h3 id="2nbsp">2.&nbsp;</h3> <p>a) Tính:</p> <p>&nbsp; &nbsp; &nbsp;12 + 4&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 38 - 3</p> <p>&nbsp; &nbsp; &nbsp;56 + 10&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 77 - 10</p> <p>b) Đặt tính rồi tính:</p> <p>&nbsp; &nbsp; &nbsp;25 + 31&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 83 - 12</p> <p>&nbsp; &nbsp; &nbsp;64 + 15&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 36 - 21</p> <h3 id="3">3.</h3> <p>a) Mỗi hình sau có bao nhiêu hình vuông? Hình tròn? Hình tam giác? Hình chữ nhật?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1682-1664865656.png.webp" width="603" height="166" alt="hinh-anh-on-tap-1230-1" title="hinh-anh-on-tap-1230-1" loading="lazy"></p> <p>b) Hình bên có bao nhiêu khối hộp chữ nhật? Khối lập phương?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1683-1664865685.png.webp" alt="hinh-anh-on-tap-1230-2" title="hinh-anh-on-tap-1230-2" loading="lazy"></p> <h3 id="4">4.</h3> <p>a) Khánh và Hồng cùng sưu tầm ảnh về các loài chim. Khánh sưu tầm được 30 bức ảnh, Hồng sưu tầm được 35 bức. Hỏi cả hai bạn sưu tầm được bao nhiêu bức ảnh?</p> <p><strong>Phép tính:</strong></p> <p><img src="/uploads/tinymce/1691-1664865738.png.webp" width="198" height="49" alt="hinh-anh-on-tap-1230-3" title="hinh-anh-on-tap-1230-3" loading="lazy"></p> <p><strong>Trả lời:</strong> Cả hai bạn sưu tầm được ... bức ảnh.</p> <p>b) Trong số các bức ảnh mà Khánh và Hồng sưu tầm được có 13 ảnh đen trắng, còn lại là ảnh màu. Hỏi hai bạn đã sưu tầm được bao nhiêu bức ảnh màu?</p> <p><strong>Phép tính:</strong></p> <p><img src="/uploads/tinymce/1691-1664865793.png.webp" width="206" height="51" alt="hinh-anh-on-tap-1230-4" title="hinh-anh-on-tap-1230-4" loading="lazy"></p> <p><strong>Trả lời:&nbsp;</strong>Hai bạn sưu tầm được ... bức ảnh màu.</p> <h3 id="5">5.</h3> <p>a) Nêu độ dài của mỗi vật:</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1692-1664865829.png.webp" width="524" height="223" alt="hinh-anh-on-tap-1230-5" title="hinh-anh-on-tap-1230-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped" style="height: auto !important; min-height: 0px !important;">
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</div><p></p> <p>b) Mỗi đồng hồ sau chỉ mấy giờ?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1693-1664865852.png.webp" width="542" height="281" alt="hinh-anh-on-tap-1230-6" title="hinh-anh-on-tap-1230-6" loading="lazy"></p>