>
数学
>
计算.
(1)40.2×2.7÷16.2×150
(2)
1
5
÷[(
2
3
+
1
5
)×
1
13
].
人气:269 ℃ 时间:2020-04-21 13:40:18
解答
(1)40.2×2.7÷16.2×150,
=108.54÷16.2×150,
=6.7×150,
=1005;
(2)
1
5
÷[(
2
3
+
1
5
)×
1
13
],
=
1
5
÷[
13
15
×
1
13
],
=
1
5
÷
1
15
,
=3.
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