Gam
<p style="text-align: center;"><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b8-h1-1667016313.jpg.webp" width="542" height="179" alt="hinh-anh-gam-1972-0" title="hinh-anh-gam-1972-0" 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=1690923454&amp;rafmt=1&amp;format=741x280&amp;url=https%3A%2F%2Fsachgiaokhoa.online%2Fgam-1972G2942.html&amp;fwr=0&amp;fwrattr=true&amp;rpe=1&amp;resp_fmts=3&amp;wgl=1&amp;uach=WyJtYWNPUyIsIjEzLjAuMCIsIng4NiIsIiIsIjExNS4wLjU3OTAuMTE0IixbXSwwLG51bGwsIjY0IixbWyJOb3QvQSlCcmFuZCIsIjk5LjAuMC4wIl0sWyJHb29nbGUgQ2hyb21lIiwiMTE1LjAuNTc5MC4xMTQiXSxbIkNocm9taXVtIiwiMTE1LjAuNTc5MC4xMTQiXV0sMF0.&amp;dt=1690923453844&amp;bpp=2&amp;bdt=1146&amp;idt=492&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=3911444849126&amp;frm=20&amp;pv=1&amp;ga_vid=477145992.1690923454&amp;ga_sid=1690923454&amp;ga_hid=1630134170&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=782&amp;biw=1910&amp;bih=970&amp;scr_x=0&amp;scr_y=0&amp;eid=44759842%2C44759875%2C44759926%2C31076483%2C31076511%2C44788441&amp;oid=2&amp;pvsid=2028353715452532&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=e0svSlzWLJ&amp;p=https%3A//sachgiaokhoa.online&amp;dtd=502" data-google-container-id="a!2" data-google-query-id="CLrh4t6svIADFRBgDwIdrhcOKA" data-load-complete="true"></iframe></div></ins>
<script type="text/javascript">
            (adsbygoogle = window.adsbygoogle || []).push({});
        </script>
</div>
</div>Gam là một đơn vị đo khối lượng.<p></p> <p style="text-align: center;">Gam viết tắt là g.</p> <p style="text-align: center;"><strong>1000&nbsp;</strong>g =&nbsp;<strong>1&nbsp;</strong>kg</p> <h3 id="1-viet-so-do-khoi-luong-xem-mau">1. Viết số đo khối lượng (xem mẫu).</h3> <p><span style="color: #3598db;">Mẫu:</span></p> <p style="text-align: center;"><img src="/uploads/tinymce/b8-h2-1667016461.jpg.webp" width="388" height="140" alt="hinh-anh-gam-1972-1" title="hinh-anh-gam-1972-1" loading="lazy"></p> <p>a)</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b8-h3-1667016483.jpg.webp" width="321" height="156" alt="hinh-anh-gam-1972-2" title="hinh-anh-gam-1972-2" loading="lazy"></p> <p>b)</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b8-h4-1667016513.jpg.webp" width="346" height="159" alt="hinh-anh-gam-1972-3" title="hinh-anh-gam-1972-3" loading="lazy"></p> <h3 id="2-nhan-biet-caacutec-qua-cacircn-100-g-200-g-500-g-1-kg">2. Nhận biết các quả cân 100 g, 200 g, 500 g, 1 kg.</h3> <p style="padding-left: 40px;">Nâng lần lượt các quả cân và đọc số đo trên quả cân.</p> <h3 id="3-uoc-luong-vagrave-thuc-hagravenh-cacircn">3. Ước lượng và thực hành cân.</h3> <p>a) Chọn bốn vật, ví dụ: chai nước 1 <em>l</em>, hộp bút, sách Toán 3, cặp sách.<br>Ước lượng từng vật (nặng hơn, nhẹ hơn hay nặng bằng 1 kg).</p> <p>b) Cân rồi ghi chép khối lượng từng vật.<br>Sắp xếp các vật từ nhẹ đến nặng.</p> <h3 id="bagravei-tap-1-so">Bài tập 1: Số ?</h3> <p>a) 2 kg = .?.&nbsp; &nbsp;;&nbsp; &nbsp;5 kg = .?. g</p> <p>b) 3 000 g = .?. kg&nbsp; &nbsp;;&nbsp; &nbsp;7 000 g = .?. kg</p> <p>c) 1 kg 400 g = .?.&nbsp; &nbsp;;&nbsp; &nbsp;2 500 g = .?. kg .?. g</p> <h3 id="bagravei-tap-2-thay-bang-kg-hay-g">Bài tập 2: Thay .?. bằng kg hay g?</h3> <p style="text-align: center;"><img src="/uploads/tinymce/b8-5-1667017055.jpg.webp" width="244" height="138" alt="hinh-anh-gam-1972-4" title="hinh-anh-gam-1972-4" loading="lazy"></p> <p style="text-align: center;">5 hạt đậu đen nặng 1 .?.</p> <p style="text-align: center;"><img src="/uploads/tinymce/b8-h6-1667017086.jpg.webp" width="188" height="120" alt="hinh-anh-gam-1972-5" title="hinh-anh-gam-1972-5" 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 style="text-align: center;">Quả thanh long nặng 1 .?.</p> <p style="text-align: center;"><img src="/uploads/tinymce/b8-h7-1667017115.jpg.webp" width="196" height="119" alt="hinh-anh-gam-1972-6" title="hinh-anh-gam-1972-6" loading="lazy"></p> <p style="text-align: center;">Quả chuối nặng 200 .?.</p> <h3 id="bagravei-tap-3-so">Bài tập 3: Số ?</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b8-h8-1667017255.jpg.webp" width="308" height="197" alt="hinh-anh-gam-1972-7" title="hinh-anh-gam-1972-7" loading="lazy"></p> <p>a) 5 hộp sữa cân nặng .?. g.</p> <p>b) 1 hộp sữa cân nặng .?. g.</p> <h3 id="bagravei-tap-4nbsp">Bài tập 4:&nbsp;</h3> <p>Lượng sữa trong hộp cân nặng 380 g.</p> <p>Vỏ hộp sữa cân nặng 52 g. Hỏi cả hộp sữa cân nặng bao nhiêu gam?</p> <p><strong>Khám phá</strong></p> <p>Chim ruồi ong là loài chim tí hon, có con chỉ dài khoảng 5 cm và nặng chưa tới 2 g.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/b8-h9-1667017606.jpg.webp" width="337" height="216" alt="hinh-anh-gam-1972-8" title="hinh-anh-gam-1972-8" loading="lazy"></p>