Diện tích hình chữ nhật - Diện tích hình vuông
<p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h1-1665899054.jpg.webp" width="578" height="305" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-0" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-0" 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=1690922840&amp;rafmt=1&amp;format=741x280&amp;url=https%3A%2F%2Fsachgiaokhoa.online%2Fdien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630G2942.html&amp;fwr=0&amp;fwrattr=true&amp;rpe=1&amp;resp_fmts=3&amp;wgl=1&amp;uach=WyJtYWNPUyIsIjEzLjAuMCIsIng4NiIsIiIsIjExNS4wLjU3OTAuMTE0IixbXSwwLG51bGwsIjY0IixbWyJOb3QvQSlCcmFuZCIsIjk5LjAuMC4wIl0sWyJHb29nbGUgQ2hyb21lIiwiMTE1LjAuNTc5MC4xMTQiXSxbIkNocm9taXVtIiwiMTE1LjAuNTc5MC4xMTQiXV0sMF0.&amp;dt=1690922840024&amp;bpp=1&amp;bdt=1574&amp;idt=437&amp;shv=r20230731&amp;mjsv=m202307240101&amp;ptt=9&amp;saldr=aa&amp;abxe=1&amp;cookie=ID%3D94547395a8fa18af-22e89ad22ae300c0%3AT%3D1690912062%3ART%3D1690922713%3AS%3DALNI_MYNbCG599XmevrUPCYJ3Zv-Np5EvA&amp;gpic=UID%3D00000d3b2ce8a729%3AT%3D1690912062%3ART%3D1690922713%3AS%3DALNI_MaVlHrwAJeI0KGbMoTcFZDk5BwO2Q&amp;prev_fmts=0x0&amp;nras=1&amp;correlator=8301732416018&amp;frm=20&amp;pv=1&amp;ga_vid=875134360.1690922840&amp;ga_sid=1690922840&amp;ga_hid=1059766521&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=866&amp;biw=1910&amp;bih=970&amp;scr_x=0&amp;scr_y=0&amp;eid=44759927%2C44759842%2C44759876%2C31076087%2C31076483%2C44788441&amp;oid=2&amp;pvsid=2723647460779982&amp;tmod=1582210283&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=jQW2RmVZNy&amp;p=https%3A//sachgiaokhoa.online&amp;dtd=448" data-google-container-id="a!2" data-google-query-id="CJnjibqqvIADFQmtvQodvBII0g" data-load-complete="true"></iframe></div></ins>
<script type="text/javascript">
            (adsbygoogle = window.adsbygoogle || []).push({});
        </script>
</div>
</div><p></p> <p><strong>1. Diện tích hình chữ nhật</strong></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h2-1665899138.jpg.webp" width="463" height="226" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-1" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-1" loading="lazy"></p> <p>Hình chữ nhật ABCD có:</p> <p style="padding-left: 40px;">5 x 2 = 10 (ô vuông)</p> <p>Diện tích mỗi ô vuông là 1 cm².</p> <p>Diện tích hình chữ nhật ABCD là:</p> <p style="padding-left: 40px;">5 x 2 = 10 (cm²)</p> <p style="text-align: center;">Muốn tính diện tích hình chữ nhật ta lấy chiều dài nhân với chiều rộng (cùng đơn vị đo).</p> <p><strong>2. Diện tích hình vuông</strong></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h3-1665899439.jpg.webp" width="435" height="327" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-2" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-2" loading="lazy"></p> <p>Hình vuông MNPQ có:</p> <p style="padding-left: 40px;">4 x 4 = 16 (ô vuông)</p> <p>Diện tích mỗi ô vuông là 1 cm².</p> <p>Diện tích hình vuông MNPQ là:</p> <p style="padding-left: 40px;">4 x 4 = 16 (cm²)</p> <p style="text-align: center;">Muốn tính diện tích hình vuông ta lấy độ dài một cạnh nhân với chính nó.</p> <h3 id="1-tiacutenh-dien-tiacutech-moi-higravenh-chu-nhat-sau">1. Tính diện tích mỗi hình chữ nhật sau:</h3> <p>a)</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h4-1665899715.jpg.webp" width="255" height="303" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-3" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-3" loading="lazy"></p> <p>b)</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h5-1665899735.jpg.webp" width="382" height="235" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-4" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-4" loading="lazy"></p> <h3 id="2-tiacutenh-dien-tiacutech-moi-higravenh-vuocircng-sau">2. Tính diện tích mỗi hình vuông sau:</h3> <p>a)</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h6-1665899836.jpg.webp" width="215" height="237" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-5" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-5" 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>b)</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h7-1665899854.jpg.webp" width="270" height="250" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-6" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-6" loading="lazy"></p> <h3 id="3nbsp">3.&nbsp;</h3> <p>a) Tính diện tích thẻ thư viện sau:</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h8-1665899896.jpg.webp" width="387" height="247" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-7" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-7" loading="lazy"></p> <p>b) Tính diện tích con tem sau:</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h9-1665899986.jpg.webp" width="213" height="141" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-8" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-8" loading="lazy"></p> <h3 id="4-thuc-hagravenh">4. Thực hành:</h3> <p>Sử dụng 12 mảnh giấy hình vuông diện tích 1 cm² để ghép thành các hình chữ nhật khác nhau nhưng có cùng diện tích là 12 cm².</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b37-h10-1665900059.jpg.webp" width="590" height="317" alt="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-9" title="hinh-anh-dien-tich-hinh-chu-nhat-dien-tich-hinh-vuong-1630-9" loading="lazy"></p>