0.38x7又3/50.38*2又1/238%×2

题目详情

0.38x7又3/5 0.38*2又1/2 38%×2

▼优质解答

答案和解析

0.38x7又3/5
=(19/50)×(38/5)
=361/125
0.38*2又1/2
=(19/50)×(5/2)
=95/100
=19/20
38%×2
=76%
=0.76

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