9.89×9.9+0.989的简便运算?
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9.89*9.9+0.989
=9.89*9.9+9.89*0.1
=9.89*(9.9+0.1)
=9.89*10
=98.9望采纳
=9.89*9.9+9.89*0.1
=9.89*(9.9+0.1)
=9.89*10
=98.9望采纳
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9.89×9.9+0.989的简便运算如下
=0.989x99+0.989x1
=0.989x(99+1)
=0.989x100
=98.9
=0.989x99+0.989x1
=0.989x(99+1)
=0.989x100
=98.9
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原式=9.89×9.9+9.89×0.1
=9.89(9.9+0.1)
=9.89×10
=98.9
=9.89(9.9+0.1)
=9.89×10
=98.9
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你好,这道题的简便运算过程如下:
9.89×9.9+0.989
=9.89×9.9+9.89×0.1
=9.89×(9.9+0.1)
=9.89×10
=98.9
9.89×9.9+0.989
=9.89×9.9+9.89×0.1
=9.89×(9.9+0.1)
=9.89×10
=98.9
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你对这个回答的评价是?
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