题目内容
计算:
(1)(0.5×3
)199×(-2×
)200
(2)0.259×220×259×643.
(1)(0.5×3
| 2 |
| 3 |
| 3 |
| 11 |
(2)0.259×220×259×643.
考点:幂的乘方与积的乘方
专题:
分析:(1)根据积的乘方的运算法则求解;
(2)根据幂的乘方和积的乘方运算法则求解.
(2)根据幂的乘方和积的乘方运算法则求解.
解答:解:(1)原式=(0.5×3
)199×(-2×
)199×(-2×
)
=(0.5×-2)199×(3
×
)199×(-2×
)
=
;
(2)原式=0.518×220×518×218
=0.518×218×518×218×22
=(0.5×2×5×2)18×4
=4×1018.
| 2 |
| 3 |
| 3 |
| 11 |
| 3 |
| 11 |
=(0.5×-2)199×(3
| 2 |
| 3 |
| 3 |
| 11 |
| 3 |
| 11 |
=
| 12 |
| 11 |
(2)原式=0.518×220×518×218
=0.518×218×518×218×22
=(0.5×2×5×2)18×4
=4×1018.
点评:本题考查了幂的乘方和积的乘方,掌握运算法则是解答本题的关键.
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