问题 解答题
计算下面各题,能简便的要简算.
1
4
5
×37.5%-
3
8
×0.8-0.375
3
11
÷7+
6
7
×
3
11

2
7
×
3
4
÷(
5
6
-
2
9
答案

1

4
5
×37.5%-
3
8
×0.8-0.375

=(1

4
5
-0.8-1)×0.375

=0×0.375

=0;

3
11
÷7+
6
7
×
3
11

=

3
11
×(
1
7
+
6
7

=

3
11
×1

=

3
11

2
7
×
3
4
÷(
5
6
-
2
9

=

2
7
×
3
4
÷
11
18

=

3
14
×
18
11

=

27
77

单项选择题
单项选择题