问题 解答题
脱式计算,能简算的要简算.
5
7
×
3
5
÷
6
7

5
8
÷(
2
3
÷
2
5

7
18
÷7×
5
13

48×(
5
6
+
7
8

2÷[(1+
2
5
)×
3
7
]
2
3
+
1
9
)÷(
4
5
-
2
3
答案

(1)

5
7
×
3
5
÷
6
7

=

3
7
×
7
6

=

1
2

(2)

5
8
÷(
2
3
÷
2
5
),

=

5
8
÷
5
3

=

3
8

(3)

7
18
÷7×
5
13

=

1
18
×
5
13

=

5
234

(4)48×(

5
6
+
7
8
),

=48×

5
6
+48×
7
8

=40+42,

=82;

(5)2÷[(1+

2
5
)×
3
7
],

=2÷[

7
5
×
3
7
],

=2÷

3
5

=

5
6

(6)(

2
3
+
1
9
)÷(
4
5
-
2
3
),

=

7
9
÷
2
15

=

35
6

多项选择题
单项选择题