题目内容
| 18 |
| 35 |
| 2 |
| 3 |
| 4 |
| 9 |
| 15 |
| 16 |
| 5 |
| 6 |
| 7 |
| 15 |
分析:(1)把0.6化为分数,原式变为
÷
×
,把除法改为乘法,约分计算;
(2)把除法改为乘法,约分计算;
(3)先算括号内的,结果为1.4,把除法改为乘法,约分计算.
| 18 |
| 35 |
| 3 |
| 5 |
| 2 |
| 3 |
(2)把除法改为乘法,约分计算;
(3)先算括号内的,结果为1.4,把除法改为乘法,约分计算.
解答:解:(1)
÷0.6×
,
=
÷
×
,
=
×
×
,
=
;
(2)
×
÷
,
=
×
×
,
=
;
(3)(2-0.6)÷
,
=1.4×
,
=3.
| 18 |
| 35 |
| 2 |
| 3 |
=
| 18 |
| 35 |
| 3 |
| 5 |
| 2 |
| 3 |
=
| 18 |
| 35 |
| 6 |
| 3 |
| 2 |
| 3 |
=
| 24 |
| 35 |
(2)
| 4 |
| 9 |
| 15 |
| 16 |
| 5 |
| 6 |
=
| 4 |
| 9 |
| 15 |
| 16 |
| 6 |
| 5 |
=
| 1 |
| 2 |
(3)(2-0.6)÷
| 7 |
| 15 |
=1.4×
| 15 |
| 7 |
=3.
点评:此题主要考查了通过约分进行计算,同时注意乘除法的转化.
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