问题
解答题
脱式计算: (1)450÷15+35 (2)(
(3)[
|
答案
(1)450÷15+35,
=30+35,
=65;
(2)(
-11 12
)÷1 6
×1 18
,1 3
=
÷9 12
×1 18
,1 3
=
×27 2
,1 3
=
;9 2
(3)[
-(9 10
÷1 4
)]÷7 20
,4 5
=[
-9 10
]÷5 7
,4 5
=
×13 70
,5 4
=
.13 56