Em ôn lại những gì đã học
<h3 id="1">1.</h3> <p>a) Số?</p> <table style="border-collapse: collapse; width: 91.9631%; height: auto !important; margin-left: auto; margin-right: auto;" border="1"> <tbody> <tr style="height: 22.3889px;"> <td style="width: 38.5679%; height: 22.3889px;">&nbsp;</td> <td style="width: 15.5491%; height: 22.3889px;">Trăm</td> <td style="width: 15.5491%; height: 22.3889px;">Chục</td> <td style="width: 15.3967%; height: 22.3889px;">Đơn vị</td> <td style="width: 15.0918%; height: 22.3889px;">Viết số</td> </tr> <tr style="height: auto !important;"> <td style="width: 38.5679%; height: auto !important; text-align: center;"><img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-214858-1665326948.png.webp" width="107" height="84" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-0" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-0" loading="lazy"><div> <div class="ads-horizontal-wrapped">
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</div></td> <td style="width: 15.5491%; height: 22.3889px; text-align: center;">?</td> <td style="width: 15.5491%; height: 22.3889px; text-align: center;">?</td> <td style="width: 15.3967%; height: 22.3889px; text-align: center;">?</td> <td style="width: 15.0918%; height: 22.3889px; text-align: center;">?</td> </tr> <tr style="height: 22.3889px;"> <td style="width: 38.5679%; height: 22.3889px; text-align: center;"><img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-214935-1665326975.png.webp" width="239" height="101" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-1" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-1" loading="lazy"></td> <td style="width: 15.5491%; height: 22.3889px; text-align: center;">?</td> <td style="width: 15.5491%; height: 22.3889px; text-align: center;">?</td> <td style="width: 15.3967%; height: 22.3889px; text-align: center;">?</td> <td style="width: 15.0918%; height: 22.3889px; text-align: center;">?</td> </tr> </tbody> </table> <p>b) Số?</p> <p>391 gồm <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327088.png.webp" width="28" height="31" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-2" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-2" loading="lazy"> trăm <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327115.png.webp" width="33" height="36" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-3" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-3" loading="lazy"> chục <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327138.png.webp" width="31" height="34" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-4" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-4" loading="lazy"> đơn vị, ta viết 319= <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327183.png.webp" width="32" height="35" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-5" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div> + <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327205.png.webp" width="34" height="37" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-6" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-6" loading="lazy"> +<img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327531.png.webp" width="35" height="38" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-7" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-7" loading="lazy"><p></p> <p>928 gồm <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327268.png.webp" width="32" height="35" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-8" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-8" loading="lazy"> trăm <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327296.png.webp" width="32" height="35" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-9" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-9" loading="lazy"> chục <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327331.png.webp" width="36" height="39" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-10" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-10" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div> đơn vị, ta viết 928= <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327372.png.webp" width="34" height="37" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-11" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-11" loading="lazy"> + <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327386.png.webp" width="37" height="41" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-12" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-12" loading="lazy"> + <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327406.png.webp" width="38" height="41" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-13" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-13" loading="lazy"><p></p> <p>770 gồm <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327447.png.webp" width="32" height="35" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-14" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-14" loading="lazy"> trăm <img src="/uploads/tinymce/anh-chup-man-hinh-2022-09-28-195403-1665327473.png.webp" width="38" height="34" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-15" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-15" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div> chục <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327497.png.webp" width="37" height="41" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-16" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-16" loading="lazy"> đơn vị, ta viết 770= <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327545.png.webp" width="37" height="41" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-17" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-17" loading="lazy"> +&nbsp; <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327562.png.webp" width="39" height="43" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-18" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-18" loading="lazy"> + <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-215121-1665327571.png.webp" width="37" height="41" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-19" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-19" loading="lazy"><p></p> <h3 id="2-img-src-uploadstinymceanh-chup-man-hinh-2022-10-09-220101-1665327671pngwebp-width-62-height-82-alt-hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-20-title-hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-20-loading-lazy-div-div-class-ads-horizontal-wrapped-span-class-ads-titleadvertisementspan-script-async-src-httpspagead2googlesyndicationcompageadjsadsbygooglejsclient-ca-pub-8123786206223951-crossorigin-anonymousscript-sachgiaokhoaonline-horizontal-ins-class-adsbygoogle-style-displayblock-data-ad-client-ca-pub-8123786206223951-data-ad-slot-2203391893-data-ad-format-auto-data-full-width-responsive-trueins-script-adsbygoogle-windowadsbygoogle-push-script-div-div">2. <img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-220101-1665327671.png.webp" width="62" height="82" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-20" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-20" loading="lazy"><div> <div class="ads-horizontal-wrapped">
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</div></h3> <p>298 ? 503</p> <p>972 ? 890</p> <p>189 ? 189</p> <p>403 ? 430</p> <p>3.</p> <p>a) Đặt tính rồi tính:</p> <p>239 + 415</p> <p>782 + 56</p> <p>484 - 247</p> <p>622 - 71</p> <p>b) Số?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-220218-1665327748.png.webp" width="560" height="189" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-21" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-21" loading="lazy"></p> <h3 id="4-quan-saacutet-bieu-do-tranh-sau-roi-tra-loi-caacutec-cacircu-hoi">4. Quan sát biểu đồ tranh sau rồi trả lời các câu hỏi:</h3> <p style="text-align: center;"><strong>Số học sinh tham gia câu lạc bộ Mĩ Thuật&nbsp;</strong></p> <table style="border-collapse: collapse; width: 100.069%; height: 89.5556px;" border="1"> <tbody> <tr style="height: 22.3889px;"> <td style="width: 23.7947%; height: 22.3889px;">Lớp 2A</td> <td style="width: 76.2053%; height: 22.3889px;"><img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-220507-1665327918.png.webp" width="206" height="60" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-22" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-22" loading="lazy"></td> </tr> <tr style="height: 22.3889px;"> <td style="width: 23.7947%; height: 22.3889px;">Lớp 2B</td> <td style="width: 76.2053%; height: 22.3889px;"><img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-220605-1665327973.png.webp" width="121" height="58" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-23" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-23" loading="lazy"></td> </tr> <tr style="height: 22.3889px;"> <td style="width: 23.7947%; height: 22.3889px;">Lớp 2C</td> <td style="width: 76.2053%; height: 22.3889px;"><img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-220650-1665328016.png.webp" width="323" height="61" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-24" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-24" loading="lazy"></td> </tr> <tr style="height: 22.3889px;"> <td style="width: 23.7947%; height: 22.3889px;">Lớp 2D</td> <td style="width: 76.2053%; height: 22.3889px;"><img src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-220715-1665328041.png.webp" width="110" height="58" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-25" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-25" loading="lazy"><div> <div class="ads-horizontal-wrapped">
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</div></td> </tr> </tbody> </table> <p>a) Lớp 2B có bao nhiêu học sinh tham gia câu lạc bộ Mĩ Thuật?</p> <p>b) Lớp nào có nhiều học sinh tham gia câu lạc bộ Mĩ thuật nhất?</p> <h3 id="5">5.</h3> <p>Một người đi 18km để đến thị trấn, sau đó lại đi tiếp 12 km để đến thành phố. Hỏi người đó đã đi được tất cả bao nhiêu Ki-lô-mét?</p> <h3 id="6-tigravem-quatildeng-duong-ngan-nhat-tu-phograveng-hoc-stem-toi-nhagrave-da-nang">6. Tìm quãng đường ngắn nhất từ phòng học STEM tới nhà đa năng:</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/anh-chup-man-hinh-2022-10-09-221105-1665328271.png.webp" width="524" height="271" alt="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-26" title="hinh-anh-em-on-lai-nhung-gi-da-hoc-1509-26" loading="lazy"></p>