问题 解答题
脱式计算
25×
1
3
×
2
5
×
3
10
80×
1
8
÷
1
800
×
1
800
(1-
1
100
×70)÷
2
7
[1-(
1
2
-
1
4
)]×
2
3
5
8
×
2
3
+
2
3
÷
3
4
9
22
÷(
5
11
-
1
3
答案

25×

1
3
×
2
5
×
3
10

=

25
3
×
2
5
×
3
10

=

10
3
×
3
10

=1;

80×

1
8
÷
1
800
×
1
800

=10÷

1
800
×
1
800

=8000×

1
800

=10;

(1-

1
100
×70)÷
2
7

=(1-

7
10
÷
2
7

=

3
10
÷
2
7

=1

1
20

[1-(

1
2
-
1
4
)]×
2
3

=[1-

1
4
2
3

=

3
4
×
2
3

=

1
2

5
8
×
2
3
+
2
3
÷
3
4

=

5
12
+
8
9

=1

11
36

9
22
÷(
5
11
-
1
3
),

=

9
22
÷
4
33

=3

3
8

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