题目内容
17×
|
(
| ||||||||
|
|
分析:(1)直接约分进行计算即可,
(2)运用乘法的分配律进行简算,
(3)运用乘法的分配律进行简算,
(4)把除以8化成乘以
,进行计算即可.
(2)运用乘法的分配律进行简算,
(3)运用乘法的分配律进行简算,
(4)把除以8化成乘以
| 1 |
| 8 |
解答:解:(1)17×
×
,
=
×
,
=
;
(2)(
+
)×32,
=
×32+
×32,
=24+20,
=44;
(3)
×34+
×11,
=
×(34+11),
=
×45,
=25;
(4)
÷8×
,
=
×
×
,
=
.
| 7 |
| 51 |
| 3 |
| 14 |
=
| 7 |
| 3 |
| 3 |
| 14 |
=
| 1 |
| 2 |
(2)(
| 3 |
| 4 |
| 5 |
| 8 |
=
| 3 |
| 4 |
| 5 |
| 8 |
=24+20,
=44;
(3)
| 5 |
| 9 |
| 5 |
| 9 |
=
| 5 |
| 9 |
=
| 5 |
| 9 |
=25;
(4)
| 4 |
| 5 |
| 5 |
| 8 |
=
| 4 |
| 5 |
| 1 |
| 8 |
| 5 |
| 8 |
=
| 1 |
| 16 |
点评:此题考查了分数四则混合运算的顺序,注意能运用运算定律进行简算的要简算.
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