Luyện tập (tiếp theo)..
<h3 style="text-align: justify;" id="bagravei-1">Bài 1.</h3> <p style="text-align: justify;">a) Viết các số đo sau dưới dạng số đo có đơn vị là mét vuông (theo mẫu): 6m<sup>2</sup> 35dm<sup>2</sup>;&nbsp; &nbsp; &nbsp; 8m<sup>2 </sup>27dm<sup>2</sup>;&nbsp; &nbsp; &nbsp; 16m<sup>2 </sup>9dm<sup>2</sup>;&nbsp; &nbsp; &nbsp; 26dm<sup>2</sup>.</p> <p style="text-align: justify;">Mẫu:&nbsp; 6m<sup>2</sup> 35dm<sup>2</sup> = 6m2 + <mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="0" style="font-size: 116.7%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-mfrac><mjx-frac><mjx-num><mjx-nstrut></mjx-nstrut><mjx-mn class="mjx-n" size="s"><mjx-c class="mjx-c33"></mjx-c><mjx-c class="mjx-c35"></mjx-c></mjx-mn></mjx-num><mjx-dbox><mjx-dtable><mjx-line></mjx-line><mjx-row><mjx-den><mjx-dstrut></mjx-dstrut><mjx-mn class="mjx-n" size="s"><mjx-c class="mjx-c31"></mjx-c><mjx-c class="mjx-c30"></mjx-c><mjx-c class="mjx-c30"></mjx-c></mjx-mn></mjx-den></mjx-row></mjx-dtable></mjx-dbox></mjx-frac></mjx-mfrac></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mn>35</mn><mn>100</mn></mfrac></math></mjx-assistive-mml></mjx-container>m<sup>2</sup> = <mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="1" style="font-size: 116.7%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-mn class="mjx-n"><mjx-c class="mjx-c36"></mjx-c></mjx-mn><mjx-mfrac><mjx-frac><mjx-num><mjx-nstrut></mjx-nstrut><mjx-mn class="mjx-n" size="s"><mjx-c class="mjx-c33"></mjx-c><mjx-c class="mjx-c35"></mjx-c></mjx-mn></mjx-num><mjx-dbox><mjx-dtable><mjx-line></mjx-line><mjx-row><mjx-den><mjx-dstrut></mjx-dstrut><mjx-mn class="mjx-n" size="s"><mjx-c class="mjx-c31"></mjx-c><mjx-c class="mjx-c30"></mjx-c><mjx-c class="mjx-c30"></mjx-c></mjx-mn></mjx-den></mjx-row></mjx-dtable></mjx-dbox></mjx-frac></mjx-mfrac></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><mn>6</mn><mfrac><mn>35</mn><mn>100</mn></mfrac></math></mjx-assistive-mml></mjx-container>m<sup>2</sup>.</p> <p style="text-align: justify;">b) Viết các số đo sau dưới dạng số đo có đơn vị là đề-xi-mét vuông:</p> <p style="text-align: justify;">4dm<sup>2</sup> 65cm<sup>2</sup>;&nbsp; &nbsp; &nbsp; 95cm<sup>2</sup>;&nbsp; &nbsp; &nbsp; 102dm<sup>2 </sup>8cm<sup>2</sup>.</p> <h3 style="text-align: justify;" id="bagravei-2">Bài 2.</h3> <p style="text-align: justify;">Khoanh vào chữ đặt trước câu trả lời đúng:</p> <p style="text-align: justify;">3cm<sup>2</sup> 5mm<sup>2</sup> = ... mm<sup>2</sup></p> <p style="text-align: justify;">Số thích hợp để viết vào chỗ chấm là:</p> <p style="text-align: justify;">A. 35&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B. 305&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C. 350&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;D. 3500</p> <h3 style="text-align: justify;" id="bagravei-3">Bài 3.</h3> <p style="text-align: justify;"><strong>&gt; &lt; ?</strong></p> <p style="text-align: justify;">2dm<sup>2</sup> 7cm<sup>2</sup>... 207cm<sup>2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</sup>3m<sup>2</sup>&nbsp;48dm<sup>2</sup>... 4m<sup>2</sup></p> <p style="text-align: justify;">300mm<sup>2</sup> ... 2cm<sup>2</sup> 89mm<sup>2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</sup>61km<sup>2 </sup>... 610hm<sup>2</sup></p> <h3 style="text-align: justify;" id="bagravei-4nbsp">Bài 4.&nbsp;</h3> <p style="text-align: justify;">Để lát nền một căn phòng, người ta đã dùng vừa hết 150 viên gạch hình vuông có cạnh 40cm. Hỏi căn phòng đó cố diện tích bao nhiêu mét vuông, biết diện tích phần mạch vữa không đáng kể?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/c2luyentap-1665871167.PNG.webp" width="354" height="303" alt="hinh-anh-luyen-tap-tiep-theo-1620-0" title="hinh-anh-luyen-tap-tiep-theo-1620-0" loading="lazy"></p><div> <div class="ads-horizontal-wrapped" style="height: auto !important; min-height: 0px !important;">
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