小学数学百分数应用题及答案(七十二)(2)
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2018-09-18 10:23:41
解答
(20-2)÷20×100%.
=18÷20×100%
=90%.
答:正确率为90%.
故答案为:90%.
解答
(20-2)÷20×100%.
=18÷20×100%
=90%.
答:正确率为90%.
故答案为:90%.