7.2×8.12+0.72×8.8简便方法?
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2021-10-25
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7.2×8.12+0.72×8.8=64.8
7.2×8.12=58.464
0.72×8.8=6.336
58.464+6.336=64.8
7.2×(8.12+0.88)=64.8
8.12+0.88=9
7.2×9=64.8
7.2×8.12=58.464
0.72×8.8=6.336
58.464+6.336=64.8
7.2×(8.12+0.88)=64.8
8.12+0.88=9
7.2×9=64.8
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答:7.2*8.12+0.72*8.8
=7.2*8.12+0.72*10*0.88
=7.2*8.12+7.2*0.88
=7.2*(8.12+0.88)
=7.2*9
=64.8
所以答案是64.8。
=7.2*8.12+0.72*10*0.88
=7.2*8.12+7.2*0.88
=7.2*(8.12+0.88)
=7.2*9
=64.8
所以答案是64.8。
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简便计算如下:
7.2×8.12+0.72×8.8
=7.2×8.12+7.2×0.1×8.8
=7.2×(8.12+0.88)
=7.2×9
=(7+0.2)×9
=63+1.8
=64.8
7.2×8.12+0.72×8.8
=7.2×8.12+7.2×0.1×8.8
=7.2×(8.12+0.88)
=7.2×9
=(7+0.2)×9
=63+1.8
=64.8
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7.2×8.12+0.72×8.8
=7.2×8.12+7.2×0.88
=7.2×(8.12+0.88)
=7.2×9
=64.8
若满意请采纳
=7.2×8.12+7.2×0.88
=7.2×(8.12+0.88)
=7.2×9
=64.8
若满意请采纳
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已踩过<
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你对这个回答的评价是?
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