Question

95.5-81÷7-9.2 和 [8+（0.5-0.2）÷1.2]×0.24 把这两道算式脱式计算,要简便

Answer 1

95.5-81÷7-9.2

解,得：

==(191/2)-(81/7)-(46/5)

==(6685/70)-(810/70)-(644/70)

==5231/70

[8+（0.5-0.2）÷1.2]×0.24

解,得：

==（8+0.7/1.2）0.24

==8*0.24+（7/12)*0.24

==1.92+7*0.02

==1.92+0.14

==2.06