题目内容
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| 33 |
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0
0
.分析:此题运用乘法分配律的逆运算简算,原式变为(
+
+
-1)×
,通过计算,括号内的结果为0.
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解答:解:
×
+
×
+
×
-
,
=(
+
+
-1)×
,
=(
+
-1)×
,
=(1-1)×
,
=0.
故答案为:0.
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| 2 |
| 1 |
| 33 |
| 1 |
| 3 |
| 1 |
| 33 |
| 1 |
| 6 |
| 1 |
| 33 |
| 1 |
| 33 |
=(
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| 33 |
=(
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| 33 |
=(1-1)×
| 1 |
| 33 |
=0.
故答案为:0.
点评:此题主要考查学生运用所学定律对分数四则混合运算进行简便计算的能力.
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