题目内容
(2009?合水县)
×
+
÷
.
| 5 |
| 7 |
| 3 |
| 11 |
| 2 |
| 7 |
| 11 |
| 3 |
分析:把除法转化为乘法,根据数字特点,运用乘法分配律简算.
解答:解:
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
.
| 5 |
| 7 |
| 3 |
| 11 |
| 2 |
| 7 |
| 11 |
| 3 |
=
| 5 |
| 7 |
| 3 |
| 11 |
| 2 |
| 7 |
| 3 |
| 11 |
=(
| 5 |
| 7 |
| 2 |
| 7 |
| 3 |
| 11 |
=1×
| 3 |
| 11 |
=
| 3 |
| 11 |
点评:解答此题,注意乘除法的转化,运用运算定律进行简算.
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