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用简便方法计算8.37×7.2+8.37×2.812.5×3.7×0.89.6×10.1.
题目详情
用简便方法计算
8.37×7.2+8.37×2.8
12.5×3.7×0.8
9.6×10.1.
8.37×7.2+8.37×2.8
12.5×3.7×0.8
9.6×10.1.
▼优质解答
答案和解析
(1)8.37×7.2+8.37×2.8
=8.37×(7.2+2.8)
=8.37×10
=83.7
(2)12.5×3.7×0.8
=(12.5×0.8)×3.7
=10×3.7
=37
(3)9.6×10.1
=9.6×(10+0.1)
=9.6×10+0.1×9.6
=96+0.96
=96.96
=8.37×(7.2+2.8)
=8.37×10
=83.7
(2)12.5×3.7×0.8
=(12.5×0.8)×3.7
=10×3.7
=37
(3)9.6×10.1
=9.6×(10+0.1)
=9.6×10+0.1×9.6
=96+0.96
=96.96
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