简便运算:8.42×9.6+842×0.4
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简便运算:8.42×9.6+842×0.4
简便运算:8.42×9.6+842×0.4
简便运算:8.42×9.6+842×0.4
解
如果是这样答案为:
8.42x9.6+8.42x0.4
=8.42x(9.6+0.4)
=8.42x10
=84.2
确定题目正确.
8.42*9.6+8.42*0.4
=8.42*(9.6+0.4)
=8.42*10
=84.2