题目内容
简算:
(1)
|
(2)
|
分析:(1)把除法化成乘法,再运用乘法的分配律进行简算;
(2)运用乘法的分配律进行简算.
(2)运用乘法的分配律进行简算.
解答:解:(1)
÷
+
÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(2)
×76+
,
=
×(76+1),
=
×77,
=66.
| 2 |
| 3 |
| 5 |
| 8 |
| 1 |
| 3 |
| 5 |
| 8 |
=
| 2 |
| 3 |
| 8 |
| 5 |
| 1 |
| 3 |
| 8 |
| 5 |
=(
| 2 |
| 3 |
| 1 |
| 3 |
| 8 |
| 5 |
=1×
| 8 |
| 5 |
=
| 8 |
| 5 |
(2)
| 6 |
| 7 |
| 6 |
| 7 |
=
| 6 |
| 7 |
=
| 6 |
| 7 |
=66.
点评:考查了整数乘法分配律的运用.
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