问题 解答题
计算下列各题,写出必要的计算过程.
1
3
×14×
3
4
24×(
1
4
-
1
6
1
2
-
1
5
)×
4
5
75-25×
2
5
答案

(1)

1
3
×14×
3
4

=

7
2

=3

1
2

(2)24×(

1
4
-
1
6
),

=24×

1
4
-24×
1
6

=6-4,

=2;

(3)(

1
2
-
1
5
)×
4
5

=

3
10
×
4
5

=

6
25

(4)75-25×

2
5

=75-10,

=65.

单项选择题
单项选择题