题目内容
计算
|
12÷
|
|
|
分析:按照从左到右计算顺序,以及分数乘除法计算方法解答.
解答:解:(1)
×
×
,
=
×
,
=
;
(2)12÷
×
,
=16×
,
=21
;
(3)
÷2÷
,
=
÷
,
=
;
(4)
×
×
,
=
×
,
=
.
| 3 |
| 25 |
| 3 |
| 4 |
| 10 |
| 9 |
=
| 9 |
| 100 |
| 10 |
| 9 |
=
| 1 |
| 10 |
(2)12÷
| 3 |
| 4 |
| 4 |
| 3 |
=16×
| 4 |
| 3 |
=21
| 1 |
| 3 |
(3)
| 5 |
| 7 |
| 5 |
| 8 |
=
| 5 |
| 14 |
| 5 |
| 8 |
=
| 4 |
| 7 |
(4)
| 4 |
| 7 |
| 21 |
| 10 |
| 2 |
| 5 |
=
| 6 |
| 5 |
| 2 |
| 5 |
=
| 12 |
| 25 |
点评:本题主要考查学生依据四则运算计算方法解决问题的能力,计算结果的准确性是解答此类题目的关键.
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