简便计算:46×25%55×0,25-0,25

问题描述:

简便计算:46×25%55×0,25-0,25

先把百分数化成小数
46乘0.25+55乘0.25-0.25乘1
=0.25乘(46+55-1)
=0.25乘100
=25

算式写错了.
应该是46×25%+55×0.25-0.25
=(46+55-1)×0.25
=100×0.25
25