问题 解答题
1
7
÷7+7÷
1
7

6-(
1
7
÷2+3)
3
4
×88+
1
4
÷
1
88

[1-(
3
4
+
1
12
)]×
3
2

99%+91×(
2
13
-
1
7
答案

(1)

1
7
÷7+7÷
1
7

=

1
49
+49,

=49

1
49

(2)6-(

1
7
÷2+3)

=6-(

1
14
+3),

=6-3

1
14

=2

13
14

(3)

3
4
×88+
1
4
÷
1
88

=

3
4
×88+
1
4

=(

3
4
+
1
4
)×88,

=1×88,

=88;

(4)[1-(

3
4
+
1
12
)]×
3
2

=[1-

5
6
3
2

=

1
6
×
3
2

=

1
4

(5)99%+91×(

2
13
-
1
7

=99%+91×

2
13
-91×
1
7

=0.99+14-13,

=1.99.

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