问题 解答题
用你喜欢的方法计算.
(1)42÷(
5
14
÷
2
7
(2)(
1
6
×
3
8
)×24
(3)
11
20
×2.5×
10
11
×4
(4)
1
9
×24+24×
8
9
答案

(1)42÷(

5
14
÷
2
7

=42÷

5
4

=33

3
5

(2)(

1
6
×
3
8
)×24

=

1
16
×24

=

3
2

(3)

11
20
×2.5×
10
11
×4

=(

11
20
×
10
11
)×(4×2.5)

=

1
2
×10

=5;

(4)

1
9
×24+24×
8
9

=(

1
9
+
8
9
)×24

=1×24

=24.

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