题目内容
计算:(3
)-
-(5
)0.5+(0.008)-
×
.
| 3 |
| 8 |
| 2 |
| 3 |
| 4 |
| 9 |
| 2 |
| 3 |
| 2 |
| 25 |
考点:有理数指数幂的化简求值
专题:计算题
分析:根据有理数指数幂的运算性质,直接代入运算,可得答案.
解答:
解:(3
)-
-(5
)0.5+(0.008)-
×
=(
)-
-(
)
+(
)-
×
=(
)
-(
)
+(125)
×
=
-
+25×
=
-
+2
=
| 3 |
| 8 |
| 2 |
| 3 |
| 4 |
| 9 |
| 2 |
| 3 |
| 2 |
| 25 |
=(
| 27 |
| 8 |
| 2 |
| 3 |
| 49 |
| 9 |
| 1 |
| 2 |
| 8 |
| 1000 |
| 2 |
| 3 |
| 2 |
| 25 |
=(
| 8 |
| 27 |
| 2 |
| 3 |
| 49 |
| 9 |
| 1 |
| 2 |
| 2 |
| 3 |
| 2 |
| 25 |
=
| 4 |
| 9 |
| 7 |
| 3 |
| 2 |
| 25 |
=
| 4 |
| 9 |
| 7 |
| 3 |
=
| 1 |
| 9 |
点评:本题考查的知识点是有理数指数幂的运算性质,难度不大,属于基础题,熟练掌握有理数指数幂的运算性质,是解答的关键.
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