题目内容
| 计算. 1
|
2
|
2.3×1
|
2
|
分析:根据题意,先把带分数化成假分数,然后再根据分数的乘法计算方法进行计算即可.
解答:解:
(1)1
×4.8,
=
×4.8,
=5.4;
(2)2
×3.5,
=
×3.5,
=7.5;
(3)2.3×1
,
=2.3×
,
=
×
,
=
;
(4)2
×0.63,
=
×0.63,
=1.4.
(1)1
| 1 |
| 8 |
=
| 9 |
| 8 |
=5.4;
(2)2
| 1 |
| 7 |
=
| 15 |
| 7 |
=7.5;
(3)2.3×1
| 3 |
| 7 |
=2.3×
| 10 |
| 7 |
=
| 23 |
| 10 |
| 10 |
| 7 |
=
| 23 |
| 7 |
(4)2
| 2 |
| 9 |
=
| 20 |
| 9 |
=1.4.
点评:本题主要考查带分数的乘法计算,先把带分数化成假分数,然后再进一步计算即可.
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