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西5数上 一 小数乘法 练习 PPT课件
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这是一份西5数上 一 小数乘法 练习 PPT课件,文件包含练习二pptx、练习一pptx、练习四pptx、练习五pptx、练习三pptx等5份课件配套教学资源,其中PPT共66页, 欢迎下载使用。
西南师大·五年级上册练习三=0.9=1.7=6.0=3.7=0.3=9.7=12.5=2.22.先计算,再填表。1211.611.56866.16.127.67.58(1)1.61×85=136.85(kg)答:85千瓦时的电能炼钢136.85千克。(2)60瓦电灯照明:16.7×85≈1420(时)空调制冷:0.84×85≈71(时)4.用计算器计算。(得数保留两位小数。)204.37×0.93 ≈190.06542.25×21.75 ≈11793.94372.43×53.52 ≈19932.45 5. 上海的磁悬浮列车是世界上第一条投入商业运营的磁悬浮列车,它平均每分行驶 4.11 km,西起上海地铁 2 号线龙阳路站,东到上海浦东国际机场,全程运行 7.3 分。全程约有多少千米?(得数保留整数。)4.11×7.3 ≈ 30(km)答:全程约有 30 千米。6
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