Bài 5: Mấy Và Mấy
<h3 id="khaacutem-phaacute">Khám phá</h3> <p>Đếm số cá ở mỗi bể và ở cả hai bể.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/321-1661327241.png.webp" width="651" height="122" alt="hinh-anh-bai-5-may-va-may-194-0" title="hinh-anh-bai-5-may-va-may-194-0" 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>Mai có: 3 cá</p> <p>Nam có: 2 cá</p> <p>3 cá và 2 cá được 5 cá</p> <h3 id="hoat-dong">Hoạt động</h3> <h4>1. Số?</h4> <p>a) <img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/322-1661327298.png.webp" alt="hinh-anh-bai-5-may-va-may-194-1" title="hinh-anh-bai-5-may-va-may-194-1" loading="lazy"></p> <p>b)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/323-1661327311.png.webp" width="649" height="163" alt="hinh-anh-bai-5-may-va-may-194-2" title="hinh-anh-bai-5-may-va-may-194-2" loading="lazy"></p> <p>c)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/324-1661327319.png.webp" width="652" height="162" alt="hinh-anh-bai-5-may-va-may-194-3" title="hinh-anh-bai-5-may-va-may-194-3" loading="lazy"></p> <p>&nbsp;</p> <h4>2. Số?</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/33-1661327344.png.webp" width="717" height="934" alt="hinh-anh-bai-5-may-va-may-194-4" title="hinh-anh-bai-5-may-va-may-194-4" loading="lazy"></p> <h3 id="khaacutem-phaacute">Khám phá</h3> <p><em>Có 5 con cá gồm 1 con cá to và 4 con cá nhỏ.</em></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/341-1661327434.png.webp" width="202" height="217" alt="hinh-anh-bai-5-may-va-may-194-5" title="hinh-anh-bai-5-may-va-may-194-5" 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>5 gồm 1 và 4</p> <p>5 gồm 4 và 1</p> <p><em>Có 5 con cá gồm 2 con cá màu hồng và 3 con cá màu vàng.</em></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/342-1661327497.png.webp" alt="hinh-anh-bai-5-may-va-may-194-6" title="hinh-anh-bai-5-may-va-may-194-6" loading="lazy">5 gồm 2 và 3</p> <p>5 gồm 3 và 2</p> <h3 id="hoat-dong">Hoạt động</h3> <h4>1. Số?</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/343-1661327530.png.webp" width="691" height="283" alt="hinh-anh-bai-5-may-va-may-194-7" title="hinh-anh-bai-5-may-va-may-194-7" loading="lazy"></p> <h4>2. Số?</h4> <p>Lấy 6 que tính. Tách 6 que tính đó thành hai nhóm.</p> <p>Tìm số que tính ở mỗi nhóm (theo mẫu).</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/35-1661327654.png.webp" alt="hinh-anh-bai-5-may-va-may-194-8" title="hinh-anh-bai-5-may-va-may-194-8" loading="lazy"></p> <h3 id="luyen-tap">Luyện tập</h3> <h4>1. Số?</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/361-1661327681.png.webp" width="588" height="540" alt="hinh-anh-bai-5-may-va-may-194-9" title="hinh-anh-bai-5-may-va-may-194-9" loading="lazy"></p> <h4>2. Số?</h4> <p>a)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/362-1661327705.png.webp" width="337" height="184" alt="hinh-anh-bai-5-may-va-may-194-10" title="hinh-anh-bai-5-may-va-may-194-10" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><p></p> <p>... và ... được ...</p> <p>b)<img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/363-1661327724.png.webp" width="348" height="184" alt="hinh-anh-bai-5-may-va-may-194-11" title="hinh-anh-bai-5-may-va-may-194-11" loading="lazy"></p> <p>... gồm ... và ...</p> <h4>3. Số?</h4> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/37-1661327754.png.webp" alt="hinh-anh-bai-5-may-va-may-194-12" title="hinh-anh-bai-5-may-va-may-194-12" loading="lazy"></p>