问题 解答题
计算.(能简便的要简便)
5
8
÷
9
4
+
4
9
×
3
8

5
6
+
5
6
×
3
10
+
3
10

1
2
-
3
8
)÷
3
4
答案

(1)

5
8
÷
9
4
+
4
9
×
3
8

=

5
8
×
4
9
+
4
9
×
3
8

=(

5
8
+
3
8
)×
4
9

=1×

4
9

=

4
9

(2)

5
6
+
5
6
×
3
10
+
3
10

=

5
6
+
1
4
+
3
10

=

13
12
+
3
10

=

83
60

(3)(

1
2
-
3
8
)÷
3
4

=

1
8
÷
3
4

=

1
6

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