问题标题:
按要求从1,3,5,7,9中选出几个数字分别填进括号里,写成乘法算式.(1)要使积最大,应该怎样填?()()()X()()()()X()()(2)要使积最小,应该()()()X()()()()X()()
问题描述:
按要求从1,3,5,7,9中选出几个数字分别填进括号里,写成乘法算式.
(1)要使积最大,应该怎样填?
()()()X()()()()X()()
(2)要使积最小,应该
()()()X()()()()X()()
黄晓回答:
(1)要使积最大,应该怎样填?
(7)(5)(3)X(9)(5)(3)(1)X(9)(7)
(2)要使积最小,应该
(3)(5)(7)X(1)(5)(7)(9)X(1)(3)
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