问题 解答题
灵活计算.
6
7
-
2
5
)÷
1
35
7
8
×0.375+
3
8
÷
8
9
答案

(1)(

6
7
-
2
5
)÷
1
35

=(

6
7
-
2
5
)×35,

=

6
7
×35-
2
5
×35,

=30-14,

=16;

(2)

7
8
×0.375+
3
8
÷
8
9

=

7
8
×
3
8
+
3
8
×
9
8

=(

7
8
+
9
8
)×
3
8

=2×

3
8

=

3
4

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