问题
解答题
计算下面各题.
|
答案
(1)(
-1 2
)×401 4
=
×40-1 2
×401 4
=20-10
=10;
(2)13×
+3÷3 4
+4 3 3 4
=(13+3+1)×3 4
=17×3 4
=12
;3 4
(3)[2-(
+1 3
)]÷8 5 2 15
=[2-
]÷29 15 2 15
=
÷1 15 2 15
=
;1 2
(4)
+(1 2
×3 7
÷1 6
)5 28
=
+(1 2
÷1 14
)5 28
=
+1 2 2 5
=
;9 10
(5)(
-1 2
)÷(1 4
+1 2
)1 4
=
÷1 4 3 4
=
;1 3
(6)36×[
-(2 3
+1 12
)]1 6
=36×[
-2 3
].1 4
=36×
-36×2 3 1 4
=24-9
=15.