Bài 20: Ôn Tập Chung
<h3 id="luyen-tap">Luyện tập</h3> <h4>1. Số?</h4> <p>a)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1121-1661578420.png.webp" width="271" height="156" alt="hinh-anh-bai-20-on-tap-chung-229-0" title="hinh-anh-bai-20-on-tap-chung-229-0" 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)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1122-1661578429.png.webp" width="273" height="157" alt="hinh-anh-bai-20-on-tap-chung-229-1" title="hinh-anh-bai-20-on-tap-chung-229-1" loading="lazy"></p> <p>c)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1123-1661578438.png.webp" width="271" height="154" alt="hinh-anh-bai-20-on-tap-chung-229-2" title="hinh-anh-bai-20-on-tap-chung-229-2" loading="lazy"></p> <p>d)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1124-1661578448.png.webp" width="279" height="157" alt="hinh-anh-bai-20-on-tap-chung-229-3" title="hinh-anh-bai-20-on-tap-chung-229-3" loading="lazy"></p> <p>&nbsp;</p> <h4>2. Sắp xếp các số sau theo thứ tự từ bé đến lớn.</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1125-1661578475.png.webp" width="696" height="174" alt="hinh-anh-bai-20-on-tap-chung-229-4" title="hinh-anh-bai-20-on-tap-chung-229-4" loading="lazy"></p> <h4>3. Số?</h4> <p>3 + 5 = ...; 6 + 4 = ...; 3 + 0 = ...</p> <p>8 - 4 = ...; 10 - 5 = ...; 5 - 0 = ...</p> <h4>4. Số?</h4> <p>a)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1131-1661578577.png.webp" alt="hinh-anh-bai-20-on-tap-chung-229-5" title="hinh-anh-bai-20-on-tap-chung-229-5" 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>... + ... = ...</p> <p>b)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1132-1661578592.png.webp" alt="hinh-anh-bai-20-on-tap-chung-229-6" title="hinh-anh-bai-20-on-tap-chung-229-6" loading="lazy"></p> <p>... - 5 = ...</p> <h4>5. Hình thích hợp đặt vào dấu "?" là hình nào?</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1134-1661578626.png.webp" width="679" height="187" alt="hinh-anh-bai-20-on-tap-chung-229-7" title="hinh-anh-bai-20-on-tap-chung-229-7" loading="lazy"></p>