问题 解答题
计算,能简算的要简算.
18
35
÷0.6×
2
3
5
17
÷9+
1
9
×
12
17
4
5
÷[(
1
3
+0.4)×
4
11
].
答案

(1)

18
35
÷0.6×
2
3

=

6
7
×
2
3

=

4
7

(2)

5
17
÷9+
1
9
×
12
17

=

5
17
×
1
9
+
1
9
×
12
17

=(

5
17
+
12
17
)×
1
9

=1×

1
9

=

1
9

(3)

4
5
÷[(
1
3
+0.4)×
4
11
],

=

4
5
÷[
11
15
×
4
11
],

=

4
5
÷
4
15

=3.

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