问题 解答题
计算下面各题
3
4
×
5
9
×
3
10

7
12
÷6÷
2
3
4
5
÷2×
7
10
5
12
÷
3
5
答案

(1)

3
4
×
5
9
×
3
10

=

5
12
×
3
10

=

1
8

(2)

7
12
÷6÷
2
3

=

7
72
×
3
2

=

7
48

(3)

4
5
÷2×
7
10

=

2
5
×
7
10

=

7
25

(4)4×

5
12
÷
3
5

=

5
3
×
5
3

=

25
9

判断题
单项选择题