Question

（2013•黃石）計(jì)算：|-3|+

3

•tan30°-

3	8

-(2013-π)0+(

1

3

)-1．

Answer 1

分析：本題涉及零指數(shù)冪、負(fù)指數(shù)冪、特殊角的三角函數(shù)值、絕對(duì)值等考點(diǎn)．針對(duì)每個(gè)考點(diǎn)分別進(jìn)行計(jì)算，然后根據(jù)實(shí)數(shù)的運(yùn)算法則求得計(jì)算結(jié)果．

解答：解：原式=3+

3

×

3

3

-2-1+

1

1 3

=3+1-2-1+3
=4．

點(diǎn)評(píng)：本題考查實(shí)數(shù)的綜合運(yùn)算能力，是各地中考題中常見(jiàn)的計(jì)算題型．解決此類題目的關(guān)鍵是熟記特殊角的三角函數(shù)值，熟練掌握零指數(shù)冪、負(fù)指數(shù)冪、特殊角的三角函數(shù)值、絕對(duì)值等考點(diǎn)的運(yùn)算．