0.32*78%+1.32*22% 脱式计算

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0.32*78%+1.32*22% 脱式计算

0.32*78%+1.32*22% 脱式计算
0.32*78%+1.32*22% 脱式计算

0.32*78%+1.32*22% 脱式计算
0.32×78%+1.32×22%
=0.32×78%+(1+0.32)×22%
=0.32×78%+1×22% +0.32×22%
=0.32×(78%+22% )+0.22
=0.32+0.22
=0.54

注意到22%和78%的和为1,所以考虑
0.32*78%+1.32*22%
=0.32*(78%+22%)+1*22%
=0.32*1+0.22
=0.54