题目内容

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
(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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