问题 解答题
计算下列各题.(注意使用简便算法)
5
6
×
3
7
+
5
6
×
4
7

5
8
-
5
8
×
4
15

(35+
7
25
)÷
7
5

1÷(
3
4
+
1
2
)×
5
8
答案

(1)

5
6
×
3
7
+
5
6
×
4
7

=

5
6
×(
3
7
+
4
7
),

=

5
6
×1,

=

5
6

(2)

5
8
-
5
8
×
4
15

=

5
8
×(1-
4
15
),

=

5
8
×
1
15

=

1
24

(3)(35+

7
25
)÷
7
5

=(35+

7
25
)×
5
7

=35×

5
7
+
7
25
×
5
7

=25+

1
5

=25

1
5

(4)1÷(

3
4
+
1
2
)×
5
8

=1÷

5
4
×
5
8

=

4
5
×
5
8

=

1
2

单项选择题 A1/A2型题
选择题