简便运算1.55÷0.2+1.45×5等于多少?

2024-12-02 22:07:24
推荐回答(3个)
回答1:

运算规则:有括号,先算括号内。没括号,先算乘除,再算加减。
脱式计算:
1.55/0.2+1.45*5
=7.75+7.25
=15

回答2:

你好!
解:1.55÷0.2+1.45×5
=1.55×5+1.45×5
=(1.55+1.45)×5
=3×5
=15

回答3:

1.55÷0.2+1.45*5
=1.55÷1/5+1.45*5
=1.55*5+1.45*5
=(1.55+1.45)*5
=3*5
=15