问题 解答题
计算,能简算的要简算.
3
8
+
1
12
)×24
[(
1
3
+
1
2
5
12
]
12.5-
3
8
-0.625
25×125×32.
答案

(1)(

3
8
+
1
12
)×24,

=24×

3
8
+
1
12
×24,

=9+2,

=11;

(2)1÷[(

1
3
+
1
2
5
12
],

=1÷(

5
6
÷
5
12
),

=1÷2,

=

1
2

(3)12.5-

3
8
-0.625,

=12.5-(0.375+0.625),

=12.5-1,

=11.5;

(4)25×125×32,

=25×125×8×4,

=(25×4)×(125×8),

=100×1000,

=100000.

单项选择题
单项选择题