问题 解答题
能简算的简算
(1)
8
13
÷4×
5
6
(2)
8
9
÷
4
7
÷
1
3
(3)
1
5
÷
1
99
+
1
5
(4)15÷
1
2
÷
2
3
(5)(
11
12
-
5
8
)÷
1
24
(6)
3
7
×
4
9
+
2
3
答案

(1)

8
13
÷4×
5
6

=

8
13
×
1
4
×
5
6

=

5
39

(2)

8
9
÷
4
7
÷
1
3

=

8
9
×
7
4
×3,

=

14
3

=4

2
3

(3)

1
5
÷
1
99
+
1
5

=

1
5
×99+
1
5

=

1
5
×(99+1),

=

1
5
×100,

=20;

(4)15÷

1
2
÷
2
3

=15×2×

3
2

=45;

(5)(

11
12
-
5
8
)÷
1
24

=(

11
12
-
5
8
)×24,

=

11
12
×24-
5
8
×24,

=22-15,

=7;

(6)

3
7
×
4
9
+
2
3

=

4
21
+
2
3

=

6
7

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