Xăng-ti-mét vuông
<p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b33-h1-1667134300.jpg.webp" width="591" height="83" alt="hinh-anh-xang-ti-met-vuong-2024-0" title="hinh-anh-xang-ti-met-vuong-2024-0" loading="lazy"></p><div> <div class="ads-horizontal-wrapped" style="height: auto !important; min-height: 0px !important;">
<span class="ads-title">Advertisement</span>
<script async="" src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-8123786206223951" crossorigin="anonymous" type="text/javascript" data-checked-head="true"></script>

<ins class="adsbygoogle" style="display: block; height: 0px;" data-ad-client="ca-pub-8123786206223951" data-ad-slot="2203391893" data-ad-format="auto" data-full-width-responsive="true" data-adsbygoogle-status="done"><div id="aswift_1_host" style="border: none; height: 0px; width: 741px; margin: 0px; padding: 0px; position: relative; visibility: visible; background-color: transparent; display: inline-block; overflow: visible; opacity: 1;" tabindex="0" title="Advertisement" aria-label="Advertisement"><iframe id="aswift_1" name="aswift_1" style="left: 0px; position: absolute; top: 0px; border: 0px; width: 741px; height: 0px;" sandbox="allow-forms allow-popups allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" width="741" height="0" frameborder="0" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" src="https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-8123786206223951&amp;output=html&amp;h=280&amp;slotname=2203391893&amp;adk=3553368404&amp;adf=2501886532&amp;pi=t.ma~as.2203391893&amp;w=741&amp;fwrn=4&amp;fwrnh=100&amp;lmt=1690923367&amp;rafmt=1&amp;format=741x280&amp;url=https%3A%2F%2Fsachgiaokhoa.online%2Fxang-ti-met-vuong-2024G2942.html&amp;fwr=0&amp;fwrattr=true&amp;rpe=1&amp;resp_fmts=3&amp;wgl=1&amp;uach=WyJtYWNPUyIsIjEzLjAuMCIsIng4NiIsIiIsIjExNS4wLjU3OTAuMTE0IixbXSwwLG51bGwsIjY0IixbWyJOb3QvQSlCcmFuZCIsIjk5LjAuMC4wIl0sWyJHb29nbGUgQ2hyb21lIiwiMTE1LjAuNTc5MC4xMTQiXSxbIkNocm9taXVtIiwiMTE1LjAuNTc5MC4xMTQiXV0sMF0.&amp;dt=1690923367486&amp;bpp=1&amp;bdt=791&amp;idt=431&amp;shv=r20230731&amp;mjsv=m202307270501&amp;ptt=9&amp;saldr=aa&amp;abxe=1&amp;cookie=ID%3D94547395a8fa18af-22e89ad22ae300c0%3AT%3D1690912062%3ART%3D1690923317%3AS%3DALNI_MYNbCG599XmevrUPCYJ3Zv-Np5EvA&amp;gpic=UID%3D00000d3b2ce8a729%3AT%3D1690912062%3ART%3D1690923317%3AS%3DALNI_MaVlHrwAJeI0KGbMoTcFZDk5BwO2Q&amp;prev_fmts=0x0&amp;nras=1&amp;correlator=6180294515627&amp;frm=20&amp;pv=1&amp;ga_vid=2011603714.1690923368&amp;ga_sid=1690923368&amp;ga_hid=1169144010&amp;ga_fc=0&amp;u_tz=420&amp;u_his=50&amp;u_h=1080&amp;u_w=1920&amp;u_ah=1055&amp;u_aw=1920&amp;u_cd=24&amp;u_sd=1&amp;dmc=8&amp;adx=394&amp;ady=644&amp;biw=1910&amp;bih=970&amp;scr_x=0&amp;scr_y=0&amp;eid=44759842%2C44759875%2C44759926%2C31076512%2C44788442%2C44795921%2C44798157&amp;oid=2&amp;pvsid=1016513694384682&amp;tmod=2137688851&amp;uas=0&amp;nvt=1&amp;fc=1920&amp;brdim=0%2C25%2C0%2C25%2C1920%2C25%2C1920%2C1055%2C1920%2C970&amp;vis=2&amp;rsz=%7C%7CoeEr%7C&amp;abl=CS&amp;pfx=0&amp;fu=128&amp;bc=31&amp;ifi=2&amp;uci=a!2&amp;fsb=1&amp;xpc=JIP3ssM2xe&amp;p=https%3A//sachgiaokhoa.online&amp;dtd=460" data-google-container-id="a!2" data-google-query-id="CMa6yrWsvIADFbNYDwId8KQPKg" data-load-complete="true"></iframe></div></ins>
<script type="text/javascript">
            (adsbygoogle = window.adsbygoogle || []).push({});
        </script>
</div>
</div><p></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b33-h2-1667134431.jpg.webp" width="67" height="68" alt="hinh-anh-xang-ti-met-vuong-2024-1" title="hinh-anh-xang-ti-met-vuong-2024-1" loading="lazy"></p> <ul> <li>Xăng-ti-mét vuông là một đơn vị đo diện tích.</li> <li>Xăng-ti-mét vuông viết tắt là cm².</li> <li>1 cm² là diện tích của hình vuông có cạnh dài 1 cm.</li> </ul> <h3 id="1-viet-caacutec-so-do-dien-tiacutech">1. Viết các số đo diện tích.</h3> <p><span style="color: #3598db;">Mẫu: Năm xăng-ti-mét vuông: 5 cm².</span></p> <p>a) Mười bảy xăng-ti-mét vuông: .?.</p> <p>b) Một trăm tám mươi tư xăng-ti-mét vuông: .?.</p> <p>c) Sáu trăm chín mươi lăm xăng-ti-mét vuông: .?.</p> <h3 id="2-viet-vagrave-doc-so-do-dien-tiacutech-moi-higravenh-strongastrong-strongbstrong-strongc-strongtheo-mau">2. Viết và đọc số đo diện tích mỗi hình <strong>A</strong>, <strong>B</strong>, <strong>C </strong>(theo mẫu).</h3> <p>Mẫu:&nbsp;</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b33-h3-1667134921.jpg.webp" width="200" height="204" alt="hinh-anh-xang-ti-met-vuong-2024-2" title="hinh-anh-xang-ti-met-vuong-2024-2" loading="lazy">Có 10 ô vuông, mỗi ô vuông có diện tích 1 cm².</p> <p style="text-align: center;">Viết: 10 cm².</p> <p style="text-align: center;">Đọc: Mười xăng-ti-mét vuông.</p> <p style="text-align: center;"><img src="/uploads/tinymce/b33-h4-1667135021.jpg.webp" width="476" height="197" alt="hinh-anh-xang-ti-met-vuong-2024-3" title="hinh-anh-xang-ti-met-vuong-2024-3" loading="lazy"></p> <h3 id="bagravei-tap-1-viet-vagrave-doc-so-do-dien-tiacutech-moi-higravenhnbspstrongl-m-nstrong">Bài tập 1: Viết và đọc số đo diện tích mỗi hình&nbsp;<strong>L, M, N.</strong></h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b33-h5-1667135081.jpg.webp" width="437" height="187" alt="hinh-anh-xang-ti-met-vuong-2024-4" title="hinh-anh-xang-ti-met-vuong-2024-4" loading="lazy"></p> <h3 id="bagravei-tap-2">Bài tập 2:</h3> <p>Quan sát các hình sau.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b33-h6-1667135217.jpg.webp" width="439" height="184" alt="hinh-anh-xang-ti-met-vuong-2024-5" title="hinh-anh-xang-ti-met-vuong-2024-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
<span class="ads-title">Advertisement</span>
<script async="" src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-8123786206223951" crossorigin="anonymous" type="text/javascript" data-checked-head="true"></script>

<ins class="adsbygoogle" style="display: block; height: 280px;" data-ad-client="ca-pub-8123786206223951" data-ad-slot="2203391893" data-ad-format="auto" data-full-width-responsive="true" data-adsbygoogle-status="done"><div id="aswift_2_host" style="border: none; height: 280px; width: 741px; margin: 0px; padding: 0px; position: relative; visibility: visible; background-color: transparent; display: inline-block;"></div></ins>
<script type="text/javascript">
            (adsbygoogle = window.adsbygoogle || []).push({});
        </script>
</div>
</div><p></p> <p>a)&nbsp;<strong>Số ?</strong></p> <table style="border-collapse: collapse; width: 60.4058%; height: 82px;" border="1"> <tbody> <tr> <td style="width: 33.2818%; text-align: center;">Hình</td> <td style="width: 33.2818%; text-align: center;">Diện tích</td> <td style="width: 33.2818%; text-align: center;">Chu vi</td> </tr> <tr> <td style="width: 33.2818%; text-align: center;">D</td> <td style="width: 33.2818%; text-align: center;">.?. cm²</td> <td style="width: 33.2818%; text-align: center;">.?. cm</td> </tr> <tr> <td style="width: 33.2818%; text-align: center;">Q</td> <td style="width: 33.2818%; text-align: center;">.?. cm²</td> <td style="width: 33.2818%; text-align: center;">.?. cm</td> </tr> <tr> <td style="width: 33.2818%; text-align: center;">T</td> <td style="width: 33.2818%; text-align: center;">.?. cm²</td> <td style="width: 33.2818%; text-align: center;">.?. cm</td> </tr> </tbody> </table> <p>b)&nbsp;<strong>Hình nào?</strong></p> <ul> <li>Hình .?. và hình .?. có diện tích bằng nhau nhưng chu vi khác nhau.</li> <li>Hình .?. và hình .?. có chu vi bằng nhau nhưng diện tích khác nhau.</li> </ul> <h3 id="bagravei-tap-3-so">Bài tập 3: Số ?</h3> <p>Người ta cắt một miếng giấy hình chữ nhật có diện tích 20 cm² thành 2 mảnh giấy có diện tích bằng nhau. Diện tích mỗi mảnh giấy là .?. cm².</p>