问题 解答题
计算,能简便的要简便
(1)3-
3
8
-
5
8
(2)
5
9
÷
1
18
+
5
9
÷
1
18
(3)36×(
7
9
+
5
8
)÷
29
5
答案

1)3-

3
8
-
5
8

=3-(

3
8
+
5
8
),

=3-1,

=2;

(2)

5
9
÷
1
18
+
5
9
÷
1
18

=(

5
9
+
5
9
)×18,

=

10
9
×18,

=20;

(3)36×(

7
9
+
5
8
)÷
29
5

=(36×

7
9
+36×
5
8
÷
29
5

=(28+22

1
2
÷
29
5

=50

1
2
×
5
29

=

101
2
×
5
29

=

505
58

=8

41
58

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