题目内容
(2002?重庆)
计算下面各题( 要写出主要过程). 18÷
|
1÷(
|
4.5+0.5×10 | (
| ||||||||||||||
7.6-(1.6+
|
0.35×
|
|
(1.2-1.2÷1.2)÷1.2. |
分析:根据分数、小数的四则混合运算的法则,即可进行计算.
解答:
0.35×
÷1.4,
=0.14÷1.4,
=0.1;
×7÷
×7,
=5×
×7,
=49;
(1.2-1.2÷1.2)÷1.2,
=(1.2-1)÷1.2,
=0.2÷1.2,
=
.
解:18÷
=18×
=27-
=26
1÷(
=1÷
=1×
=
4.5+0.5×10, =4.5+5, =9.5; |
|||||||||||||||||||||||||||
(
=(
=
=
7.6-(1.6+
=7.6-1.6-
=5
|
2 |
5 |
=0.14÷1.4,
=0.1;
5 |
7 |
5 |
7 |
=5×
7 |
5 |
=49;
(1.2-1.2÷1.2)÷1.2,
=(1.2-1)÷1.2,
=0.2÷1.2,
=
1 |
6 |
点评:此题考查了分数、小数的四则混合运算,按照运算顺序计算即可.
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