题目内容
(2006?建邺区)计算.
5400-2940÷28×27; | (20.2×0.4+7.88)÷4.2; | ||||||||||||||||
(
|
10÷[
|
分析:根据整数、分数和小数的四则混合运算进行计算即可得到答案.
解答:
(4)10÷[
-(
÷
+
)]
=10÷[
-(2+
)],
=10÷[
-
],
=10÷
,
=37
.
解:(1)5400-2940÷28×27 =5400-105×27, =5400-2835, =2565; |
|||||||||||||||||||||
(2)(20.2×0.4+7.88)÷4.2 =(8.08+7.88)÷4.2, =15.96÷4.2, =3.8; (3)(
=
=
=1
|
8 |
3 |
5 |
13 |
5 |
26 |
2 |
5 |
=10÷[
8 |
3 |
2 |
5 |
=10÷[
8 |
3 |
12 |
5 |
=10÷
4 |
15 |
=37
1 |
2 |
点评:此题主要考查的是整数、分数和小数的四则混合运算.
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