Tìm thành phần chưa biết của phép tính (tiếp theo)
<p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b33-h1-1665860212.jpg.webp" width="635" height="295" alt="hinh-anh-tim-thanh-phan-chua-biet-cua-phep-tinh-tiep-theo-1614-0" title="hinh-anh-tim-thanh-phan-chua-biet-cua-phep-tinh-tiep-theo-1614-0" 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=1690922860&amp;rafmt=1&amp;format=741x280&amp;url=https%3A%2F%2Fsachgiaokhoa.online%2Ftim-thanh-phan-chua-biet-cua-phep-tinh-tiep-theo-1614G2942.html&amp;ea=0&amp;fwr=0&amp;fwrattr=true&amp;rpe=1&amp;resp_fmts=3&amp;wgl=1&amp;uach=WyJtYWNPUyIsIjEzLjAuMCIsIng4NiIsIiIsIjExNS4wLjU3OTAuMTE0IixbXSwwLG51bGwsIjY0IixbWyJOb3QvQSlCcmFuZCIsIjk5LjAuMC4wIl0sWyJHb29nbGUgQ2hyb21lIiwiMTE1LjAuNTc5MC4xMTQiXSxbIkNocm9taXVtIiwiMTE1LjAuNTc5MC4xMTQiXV0sMF0.&amp;dt=1690922860359&amp;bpp=5&amp;bdt=977&amp;idt=273&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=1116981907351&amp;frm=20&amp;pv=1&amp;ga_vid=702144543.1690922861&amp;ga_sid=1690922861&amp;ga_hid=1360005332&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=919&amp;biw=1910&amp;bih=970&amp;scr_x=0&amp;scr_y=0&amp;eid=44759927%2C44759842%2C44759876%2C31076446%2C42532335%2C44788441&amp;oid=2&amp;pvsid=625889591233335&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;dtd=284" data-google-container-id="a!2" data-google-query-id="CNvQ2sOqvIADFbtuDwIdRC8AfA" data-load-complete="true"></iframe></div></ins>
<script type="text/javascript">
            (adsbygoogle = window.adsbygoogle || []).push({});
        </script>
</div>
</div><p></p> <h3 style="text-align: center;" id="a-tigravem-mot-thua-so-cua-pheacutep-nhacircn">A. TÌM MỘT THỪA SỐ CỦA PHÉP NHÂN</h3> <p>2 x 4 = 8</p> <p>4 = 8 : 2</p> <p>2 = 8 : 4</p> <p style="text-align: center;">Muốn tìm một thừa số ta lấy tích chia cho thừa số kia.</p> <h3 id="1-tigravem-thagravenh-phan-chua-biet-trong-caacutec-pheacutep-tiacutenh-sau">1. Tìm thành phần chưa biết trong các phép tính sau:</h3> <p>a) 3 x ? = 27&nbsp; ;&nbsp; 4 x ? = 48</p> <p>b) ? x 3 = 603&nbsp; ;&nbsp; ? x 2 = 8 284</p> <h3 id="2-so">2. Số ?</h3> <table style="border-collapse: collapse; width: 79.5569%; margin-left: auto; margin-right: auto;" border="1"> <tbody> <tr> <td style="width: 34.7391%;">Thừa số</td> <td style="width: 11.4458%; text-align: center;">31</td> <td style="width: 11.0442%; text-align: center;">9</td> <td style="width: 11.245%; text-align: center;">5</td> <td style="width: 10.4418%; text-align: center;">?</td> <td style="width: 10.4418%; text-align: center;">?</td> <td style="width: 10.6426%; text-align: center;">?</td> </tr> <tr> <td style="width: 34.7391%;">Thừa số</td> <td style="width: 11.4458%; text-align: center;">3</td> <td style="width: 11.0442%; text-align: center;">?</td> <td style="width: 11.245%; text-align: center;">?</td> <td style="width: 10.4418%; text-align: center;">8</td> <td style="width: 10.4418%; text-align: center;">4</td> <td style="width: 10.6426%; text-align: center;">5</td> </tr> <tr> <td style="width: 34.7391%;">Tích</td> <td style="width: 11.4458%; text-align: center;">?</td> <td style="width: 11.0442%; text-align: center;">36</td> <td style="width: 11.245%; text-align: center;">85</td> <td style="width: 10.4418%; text-align: center;">64</td> <td style="width: 10.4418%; text-align: center;">96</td> <td style="width: 10.6426%; text-align: center;">5 505</td> </tr> </tbody> </table> <p>&nbsp;</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b33-h2-1665862389.jpg.webp" width="598" height="310" alt="hinh-anh-tim-thanh-phan-chua-biet-cua-phep-tinh-tiep-theo-1614-1" title="hinh-anh-tim-thanh-phan-chua-biet-cua-phep-tinh-tiep-theo-1614-1" loading="lazy"></p> <h3 style="text-align: center;" id="b-tigravem-so-bi-chia-tigravem-so-chia">B. TÌM SỐ BỊ CHIA, TÌM SỐ CHIA</h3> <p><strong>1. Tìm số bị chia</strong></p> <p>30 : 5 = 6</p> <p>30 = 6 x 5</p> <p style="text-align: center;">Trong phép chia hết, muốn tìm số bị chia ta lấy thương nhân với số chia.</p> <h3 id="2-tigravem-so-chia">2. Tìm số chia</h3> <p>30 : 5 = 6</p> <p>5 = 30 : 6</p> <p style="text-align: center;">Trong phép chia hết, muốn tìm số chia ta lấy số bị chia chia cho thương,</p> <h3 id="3-tigravem-thagravenh-phan-chua-biet-trong-caacutec-pheacutep-tiacutenh-sau">3. Tìm thành phần chưa biết trong các phép tính sau:</h3> <p>a) ? : 5 = 30&nbsp; ;&nbsp; ? : 4 = 11</p> <p>b) 24 : ? = 4&nbsp; ;&nbsp; 69 : ? = 3</p> <p>c) ? : 2 = 321&nbsp; ;&nbsp; 884 : ? = 2</p> <h3 id="4">4.</h3> <p>Bác Năm muốn lấy một số cây để trồng vào 8 luống, mỗi luống 12 cây. Tính số cây bác Nam cần lấy.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b33-h3-1665863174.jpg.webp" width="498" height="258" alt="hinh-anh-tim-thanh-phan-chua-biet-cua-phep-tinh-tiep-theo-1614-2" title="hinh-anh-tim-thanh-phan-chua-biet-cua-phep-tinh-tiep-theo-1614-2" loading="lazy"></p>