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精品文檔【史上最全】2012年全國(guó)中考數(shù)學(xué)試題分類解析匯編(160套60專題)專題2:實(shí)數(shù)的運(yùn)算一、選擇題1. (2012山西省2分)計(jì)算:25的結(jié)果是【 】A7B3C3D7【答案】A?!究键c(diǎn)】有理數(shù)的加法。【分析】根據(jù)有理數(shù)的加法運(yùn)算法則計(jì)算即可:25=(2+5)=7。故選A。2. (2012廣東佛山3分)與234運(yùn)算結(jié)果相同的是【 】A423B2(34)C2(42)D324【答案】B?!究键c(diǎn)】有理數(shù)的乘除運(yùn)算?!痉治觥扛鶕?jù)連除的性質(zhì)可得:234=2(34)。故選B。3. (2012廣東梅州3分)=【 】A2B2C1D1【答案】D?!究键c(diǎn)】零指數(shù)冪?!痉治觥扛鶕?jù)任何非0數(shù)的0次冪等于1解答即可:。故選D。4. (2012廣東肇慶3分)計(jì)算 的結(jié)果是【 】A1 B C 5 D 【答案】B?!究键c(diǎn)】有理數(shù)的加法?!痉治觥扛鶕?jù)有理數(shù)的加法運(yùn)算法則計(jì)算即可得解:3+2=(32)=1。故選B。5. (2012浙江杭州3分)計(jì)算(23)+(1)的結(jié)果是【 】A2B0C1D2【答案】A?!究键c(diǎn)】有理數(shù)的加減混合運(yùn)算?!痉治觥扛鶕?jù)有理數(shù)的加減混合運(yùn)算的法則進(jìn)行計(jì)算即可得解:(23)+(1)=1+(1)=2。故選A。6. (2012浙江嘉興、舟山4分)(2)0等于【 】A1B2C0D2【答案】A?!究键c(diǎn)】零指數(shù)冪?!痉治觥扛鶕?jù)不等于0的數(shù)的零次冪為0的定義,直接得出結(jié)果:(2)0=1。故選A。7. (2012浙江寧波3分)(2)0的值為【 】A2B0C1D2【答案】C?!究键c(diǎn)】零指數(shù)冪?!痉治觥扛鶕?jù)零指數(shù)冪的定義:a0=1(a0),直接得出結(jié)果:(2)0=1。故選C。8. (2012浙江臺(tái)州4分)計(jì)算11的結(jié)果是【 】 A.1 B.0 C.-1 D.-2【答案】B?!究键c(diǎn)】有理數(shù)的加減混合運(yùn)算。【分析】根據(jù)有理數(shù)的加減混合運(yùn)算的法則進(jìn)行計(jì)算即可得解:11=0。故選B。9. (2012浙江寧波3分)如圖是老年活動(dòng)中心門口放著的一個(gè)招牌,這個(gè)招牌是由三個(gè)特大號(hào)的骰子摞在一起而成的每個(gè)骰子的六個(gè)面的點(diǎn)數(shù)分別是1到6,其中可以看見(jiàn)7個(gè)面,其余11個(gè)面是看不見(jiàn)的,則看不見(jiàn)的面上的點(diǎn)數(shù)總和是【 】A41B40C39D38【答案】C?!究键c(diǎn)】正方體相對(duì)兩個(gè)面上的文字?!痉治觥咳齻€(gè)骰子18個(gè)面上的數(shù)字的總和為:3(1+2+3+4+5+6)=321=63,看得見(jiàn)的7個(gè)面上的數(shù)字的和為:1+2+3+5+4+6+3=24,看不見(jiàn)的面上的點(diǎn)數(shù)總和是:6324=39。故選C。10. (2012江蘇南通3分)計(jì)算6(3)的結(jié)果是【 】A B2 C3 D18【答案】B。【考點(diǎn)】有理數(shù)的除法【分析】根據(jù)有理數(shù)的除法運(yùn)算法則計(jì)算即可:6(3)(63)2。故選B。11. (2012江蘇泰州3分)等于【 】A3 B C-3 D【答案】D?!究键c(diǎn)】負(fù)整數(shù)指數(shù)冪?!痉治觥恐苯討?yīng)用負(fù)整數(shù)指數(shù)冪的概念作答:。故選D。12. (2012江蘇蘇州3分)若,則m的值為【 】A.3 B.4 C.5 D. 6【答案】A?!究键c(diǎn)】?jī)绲某朔?,同底?shù)冪的乘法。【分析】,即,即。 1+5m=11,解得m=2。故選A。13. (2012廣東河源3分)【 】A2 B2 C1 D1【答案】C?!究键c(diǎn)】零指數(shù)冪?!痉治觥扛鶕?jù)零指數(shù)冪的定義直接作答:。故選C。14. (2012福建龍巖4分)計(jì)算:23 =【 】A1 B1 C5 D5【答案】A?!究键c(diǎn)】有理數(shù)的加減法?!痉治觥扛鶕?jù)有理數(shù)的加減法運(yùn)算法則直接得到結(jié)果:23 =1。故選A。15. (2012湖南湘潭3分)文文設(shè)計(jì)了一個(gè)關(guān)于實(shí)數(shù)運(yùn)算的程序,按此程序,輸入一個(gè)數(shù)后,輸出的數(shù)比輸入的數(shù)的平方小1,若輸入,則輸出的結(jié)果為【 】A5 B6 C7 D8【答案】B。【考點(diǎn)】實(shí)數(shù)的運(yùn)算?!痉治觥扛鶕?jù)運(yùn)算程序得出輸出數(shù)的式子,再根據(jù)實(shí)數(shù)的運(yùn)算計(jì)算出此數(shù)即可:輸入一個(gè)數(shù)后,輸出的數(shù)比輸入的數(shù)的平方小1,輸入,則輸出的結(jié)果為()21=71=6。故選B。16.(2012四川南充3分)計(jì)算2(3)的結(jié)果是【 】(A)5(B)1(C)1(D)5【答案】A?!究键c(diǎn)】有理數(shù)的計(jì)算?!痉治觥孔鲇欣頂?shù)的減法把括號(hào)去掉,即可得出正確答案:2(3)=23=5。故選A。17. (2012貴州安順3分)計(jì)算的結(jié)果是【 】ABC3D3【答案】D?!究键c(diǎn)】立方根?!痉治觥扛鶕?jù)立方根的定義,求數(shù)a的立方根,也就是求一個(gè)數(shù)x,使得x3=a,則x就是a的一個(gè)立方根:33=27,。故選D。18. (2012貴州黔東南4分)計(jì)算12等于【 】A1 B3 C1 D3【答案】D?!究键c(diǎn)】有理數(shù)的減法?!痉治觥扛鶕?jù)有理數(shù)的減法運(yùn)算法則,減去一個(gè)數(shù)等于加上這個(gè)數(shù)的相反數(shù)進(jìn)行計(jì)算即可:12=3。故選D。19. (2012貴州黔南4分)計(jì)算(5)等于【 】A5 B5 C D【答案】A?!究键c(diǎn)】去括號(hào)?!痉治觥扛鶕?jù)去括號(hào)法則,減去一個(gè)數(shù)等于加上這個(gè)數(shù)的相反數(shù)進(jìn)行計(jì)算即可:(5)=5。故選A。20. (2012貴州遵義3分)(2)的值是【 】A2 B2 C2 D4【答案】B?!究键c(diǎn)】去括號(hào)運(yùn)算,【分析】根據(jù)去括號(hào)運(yùn)算法則計(jì)算出結(jié)果:(2)=2。故選B。21. (2012山東濱州3分) 等于【 】A B6CD8【答案】C?!究键c(diǎn)】有理數(shù)的乘方?!痉治觥扛鶕?jù)乘方的運(yùn)算法則直接計(jì)算即可:。故選C。22. (2012山東德州3分)下列運(yùn)算正確的是【 】A B(3)2=9 C23=8 D20=0【答案】A?!究键c(diǎn)】算術(shù)平方根,有理數(shù)的乘方,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪?!痉治觥糠謩e根據(jù)算術(shù)平方根、有理數(shù)的平方、負(fù)整數(shù)指數(shù)冪及0指數(shù)冪的運(yùn)算法則進(jìn)行計(jì)算即可:A、22=4,故本選項(xiàng)正確;B、(3)2=9,故本選項(xiàng)錯(cuò)誤;C、,故本選項(xiàng)錯(cuò)誤;D、20=1,故本選項(xiàng)錯(cuò)誤。故選A。23. (2012山東聊城3分)計(jì)算|的結(jié)果是【 】ABC1D1【答案】A?!究键c(diǎn)】絕對(duì)值,有理數(shù)的減法?!痉治觥扛鶕?jù)絕對(duì)值的性質(zhì)去掉絕對(duì)值符號(hào),然后根據(jù)有理數(shù)的減法運(yùn)算,減去一個(gè)數(shù)等于加上這個(gè)數(shù)的相反數(shù)進(jìn)行計(jì)算即可得解:。故選A。24. (2012山東濰坊3分)計(jì)算:2-2=【 】A B C D4【答案】A?!究键c(diǎn)】負(fù)整數(shù)指數(shù)冪?!痉治觥扛鶕?jù)負(fù)整數(shù)指數(shù)冪的運(yùn)算法則:(a0)進(jìn)行計(jì)算:。故選A。25. (2012廣西河池3分)計(jì)算的結(jié)果是【 】A3B3CD1【答案】C。【考點(diǎn)】有理數(shù)的減法。【分析】根據(jù)有理數(shù)的減法計(jì)算即可:,故選C。26. (2012廣西玉林、防城港3分)計(jì)算:22=【 】A.1 B. 2 C. 4 D.8【答案】C?!究键c(diǎn)】有理數(shù)的乘方【分析】利用有理數(shù)乘方的意義求得結(jié)果即可原式=22=4。故選C。27. (2012甘肅白銀3分)【 】A3 B3 C2 D2【答案】A?!究键c(diǎn)】立方根?!痉治觥扛鶕?jù)立方根的定義,求數(shù)a的立方根,也就是求一個(gè)數(shù)x,使得x3=a,則x就是a的一個(gè)立方根:33=27,。故選A。28. (2012黑龍江綏化3分)下列計(jì)算正確的是【 】A-|-3|=-3 B30=0 C3-1=-3 D 【答案】A。【考點(diǎn)】絕對(duì)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根?!痉治觥扛鶕?jù)絕對(duì)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根的概念或運(yùn)算法則逐一計(jì)算作出判斷:A、-|-3|=-3,此選項(xiàng)正確;B、30=1,此選項(xiàng)錯(cuò)誤;C、,此選項(xiàng)錯(cuò)誤;D、,此選項(xiàng)錯(cuò)誤。故選A。29. (2012黑龍江龍東地區(qū)3分)若(a1)2+|b2|=0,則(ab)2012的值是【 】A. 1 B. 1 C. 0 D. 2012【答案】B?!究键c(diǎn)】偶次方和絕對(duì)值的非負(fù)數(shù)性質(zhì)。【分析】根據(jù)偶次方和絕對(duì)值的非負(fù)數(shù)性質(zhì),由(a1)2+|b2|=0得a1=0,b2=0。解得a=1,b=2。(ab)2012=(12)2012=1。故選B。二、填空題1. (2012天津市3分)3= 【答案】3?!究键c(diǎn)】絕對(duì)值?!痉治觥扛鶕?jù)負(fù)數(shù)的絕對(duì)值等于這個(gè)數(shù)的相反數(shù),即可得出答案:|3|=3。2.(2012上海市4分)計(jì)算= 【答案】。【考點(diǎn)】有理數(shù)的減法,絕對(duì)值?!痉治觥俊?. (2012廣東肇慶3分)計(jì)算的結(jié)果是 【答案】2。【考點(diǎn)】二次根式的乘法?!痉治觥扛鶕?jù)二次根式乘法進(jìn)行計(jì)算:。4. (2012廣東珠海4分)計(jì)算 【答案】?!究键c(diǎn)】有理數(shù)的減法?!痉治觥扛鶕?jù)減去一個(gè)數(shù)等于加上這個(gè)數(shù)的相反數(shù)進(jìn)行計(jì)算即可求解:。5. (2012浙江杭州4分)某企業(yè)向銀行貸款1000萬(wàn)元,一年后歸還銀行1065.6多萬(wàn)元,則年利率高于 %【答案】6.56?!究键c(diǎn)】列出代數(shù)式,有理數(shù)的混合運(yùn)算?!痉治觥扛鶕?jù)題意和年利率的概念列出代數(shù)式,再進(jìn)行計(jì)算即可求出答案:因?yàn)橄蜚y行貸款1000萬(wàn)元,一年后若歸還銀行1065.6萬(wàn)元,則年利率是(1065.61000)1000100%=6.56%。 所以一年后歸還銀行1065.6多萬(wàn)元,則年利率高于6.56%。6. (2012江蘇常州4分)計(jì)算:2= ,= ,= ,= ?!敬鸢浮?,4,3?!究键c(diǎn)】絕對(duì)值,負(fù)整數(shù)指數(shù)冪,有理數(shù)的乘方,立方根化簡(jiǎn)?!痉治觥扛鶕?jù)乘法分配律,同底冪乘法,合并同類項(xiàng),冪的乘方運(yùn)算法則逐一計(jì)算即可。7. (2012江蘇淮安3分) ?!敬鸢浮?。【考點(diǎn)】絕對(duì)值?!痉治觥扛鶕?jù)數(shù)軸上某個(gè)數(shù)與原點(diǎn)的距離叫做這個(gè)數(shù)的絕對(duì)值的定義,在數(shù)軸上,點(diǎn)3到原點(diǎn)的距離是3,所以。8. (2012江蘇蘇州3分)計(jì)算:23= .【答案】8?!究键c(diǎn)】有理數(shù)的乘方【分析】根據(jù)有理數(shù)乘方的意義,an表示n個(gè)a相乘的積,所以23表示3個(gè)2相乘的積,222=8。9. (2012江蘇無(wú)錫2分)計(jì)算:= 【答案】2。【考點(diǎn)】立方根。【分析】根據(jù)立方根的定義,求數(shù)a的立方根,也就是求一個(gè)數(shù)x,使得x3=a,則x就是a的一個(gè)立方根:(2)3=8,。10. (2012江蘇鎮(zhèn)江2分)計(jì)算:(2)3= ?!敬鸢浮?。【考點(diǎn)】有理數(shù)的計(jì)算。【分析】根據(jù)有理數(shù)的計(jì)算法則直接計(jì)算得出結(jié)果:(2)3=6。11. (2012福建南平3分)計(jì)算:= 【答案】2?!究键c(diǎn)】立方根?!痉治觥扛鶕?jù)立方根的定義,求數(shù)a的立方根,也就是求一個(gè)數(shù)x,使得x3=a,則x就是a的一個(gè)立方根:23=8,。12. (2012湖北荊州3分)計(jì)算= 【答案】?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪?!痉治觥酷槍?duì)算術(shù)平方根,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪3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:。13. (2012湖北十堰3分)計(jì)算: 【答案】。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值零指數(shù)冪【分析】去絕對(duì)值符號(hào),計(jì)算零指數(shù)冪,合并運(yùn)算即可:。14. (2012湖南岳陽(yáng)3分)計(jì)算:|2|= 【答案】2?!究键c(diǎn)】絕對(duì)值。105【分析】根據(jù)一個(gè)正數(shù)的絕對(duì)值是它本身;一個(gè)負(fù)數(shù)的絕對(duì)值是它的相反數(shù);0的絕對(duì)值是0。20,|2|=2。15. (2012湖南永州3分)(2012)= 【答案】2012?!究键c(diǎn)】相反數(shù)。【分析】相反數(shù)的定義是:如果兩個(gè)數(shù)只有符號(hào)不同,我們稱其中一個(gè)數(shù)為另一個(gè)數(shù)的相反數(shù),特別地,0的相反數(shù)還是0。因此2012的相反數(shù)是2012。18. (2012遼寧錦州3分)計(jì)算:= .【答案】?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,二次根式化簡(jiǎn),特殊角的三角函數(shù)值。【分析】針對(duì)零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,二次根式化簡(jiǎn),特殊角的三角函數(shù)值4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: 。19. (2012遼寧營(yíng)口3分) 【答案】1?!究键c(diǎn)】特殊角的三角函數(shù)值,二次根式化簡(jiǎn)?!痉治觥?。20. (2012貴州黔西南3分)計(jì)算: ?!敬鸢浮俊!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,絕對(duì)值?!痉治觥扛鶕?jù)算術(shù)平方根,絕對(duì)值的概念判斷3.14和2的符號(hào),再進(jìn)行化簡(jiǎn),計(jì)算即可:。21. (2012山東濟(jì)南3分)計(jì)算:2sin30= 【答案】3。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,二次根式的化簡(jiǎn)。【分析】針對(duì)特殊角的三角函數(shù)值,二次根式的化簡(jiǎn)2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:2sin30。22. (2012山東萊蕪4分)計(jì)算: 【答案】?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)負(fù)整數(shù)指數(shù)冪,算術(shù)平方根,特殊角的三角函數(shù)值3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: 。23. (2012山東青島3分) 【答案】7。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,二次根式化簡(jiǎn)和運(yùn)算。【分析】針對(duì)零指數(shù)冪,二次根式化簡(jiǎn)和運(yùn)算等考點(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:。24. (2012山東威海3分)計(jì)算: .【答案】。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,有理數(shù)的計(jì)算?!痉治觥酷槍?duì)零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,有理數(shù)的計(jì)算3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:。25. (2012河南省5分)計(jì)算: 【答案】10?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,有理數(shù)的乘方?!痉治觥酷槍?duì)零指數(shù)冪,有理數(shù)的乘方2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:。26. (2012內(nèi)蒙古包頭3分)計(jì)算:= ?!敬鸢浮??!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,二次根式化簡(jiǎn),零指數(shù)冪。【分析】針對(duì)二次根式化簡(jiǎn),零指數(shù)冪2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:。三、解答題1. (2012北京市5分)計(jì)算:. 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,算術(shù)平方根,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)零指數(shù)冪,算術(shù)平方根,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪4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。2. (2012重慶市6分)計(jì)算:【答案】解:原式=21519=8?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,零指數(shù)冪,絕對(duì)值,乘方,負(fù)整數(shù)指數(shù)冪。【分析】針對(duì)算術(shù)平方根,零指數(shù)冪,絕對(duì)值,乘方,負(fù)整數(shù)指數(shù)冪5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。3. (2012山西省5分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,二次根式化簡(jiǎn),特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)零指數(shù)冪,二次根式化簡(jiǎn),特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪4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。4. (2012海南省4分)計(jì)算:; 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,二次根式化簡(jiǎn),絕對(duì)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)二次根式化簡(jiǎn),絕對(duì)值,負(fù)整數(shù)指數(shù)冪3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。5. (2012寧夏區(qū)6分)計(jì)算: 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,零指數(shù)冪,絕對(duì)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)特殊角的三角函數(shù)值,零指數(shù)冪,絕對(duì)值,負(fù)整數(shù)指數(shù)冪4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。6. (2012廣東省6分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)特殊角的三角函數(shù)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪3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。7. (2012廣東梅州7分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,算術(shù)平方根,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)絕對(duì)值,算術(shù)平方根,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪4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。8. (2012廣東汕頭7分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪。【分析】針對(duì)特殊角的三角函數(shù)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪3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。9. (2012廣東深圳5分)計(jì)算: 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,二次根式化簡(jiǎn),特殊角的三角函數(shù)值。【分析】針對(duì)絕對(duì)值,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,二次根式化簡(jiǎn),特殊角的三角函數(shù)值5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。10. (2012廣東湛江6分)計(jì)算:|3|+(2012)0【答案】解:原式=32+1=2?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,算術(shù)平方根,零指數(shù)冪?!痉治觥酷槍?duì)絕對(duì)值,算術(shù)平方根,零指數(shù)冪3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。11. (2012廣東肇慶6分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)絕對(duì)值,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪3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。12. (2012廣東珠海6分)計(jì)算:【答案】解:原式=2112=0?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,絕對(duì)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)算術(shù)平方根,絕對(duì)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪4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。13. (2012廣東汕頭9分)觀察下列等式:第1個(gè)等式:;第2個(gè)等式:;第3個(gè)等式:;第4個(gè)等式:;請(qǐng)解答下列問(wèn)題:(1)按以上規(guī)律列出第5個(gè)等式:a5=;(2)用含有n的代數(shù)式表示第n個(gè)等式:an=(n為正整數(shù));(3)求a1+a2+a3+a4+a100的值【答案】解:(1)。 (2)。 (3)a1+a2+a3+a4+a100?!究键c(diǎn)】分類歸納(數(shù)字的變化類)?!痉治觥浚?)(2)觀察知,找等號(hào)后面的式子規(guī)律是關(guān)鍵:分子不變,為1;分母是兩個(gè)連續(xù)奇數(shù)的乘積,它們與式子序號(hào)之間的關(guān)系為:序號(hào)的2倍減1和序號(hào)的2倍加1。(3)運(yùn)用變化規(guī)律計(jì)算。14. (2012浙江湖州6分)計(jì)算: 【答案】解:原式=4141=8。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,零指數(shù)冪,有理數(shù)的乘方,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)算術(shù)平方根,零指數(shù)冪,有理數(shù)的乘方,特殊角的三角函數(shù)值4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。15. (2012浙江嘉興、舟山4分)計(jì)算:【答案】解:原式=5+49=0?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值、平方根、平方的定義?!痉治觥扛鶕?jù)絕對(duì)值、平方根、平方的定義分別計(jì)算,然后再進(jìn)行加減運(yùn)算。16. (2012浙江麗水、金華6分)計(jì)算:2sin60|3|【答案】解:原式?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,絕對(duì)值,二次根式化簡(jiǎn),負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)特殊角的三角函數(shù)值,絕對(duì)值,二次根式化簡(jiǎn),負(fù)整數(shù)指數(shù)冪5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。17. (2012浙江衢州6分)計(jì)算:|2|+21cos60(1)0【答案】解:原式=2+1=21=1?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,零指數(shù)冪?!痉治觥酷槍?duì)絕對(duì)值,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,零指數(shù)冪4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。18. (2012浙江紹興4分)計(jì)算:;【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,平方,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,絕對(duì)值?!痉治觥酷槍?duì)平方,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,絕對(duì)值4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。19. (2012浙江臺(tái)州8分)計(jì)算: 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,負(fù)整數(shù)指數(shù)冪,二次根式化簡(jiǎn)?!痉治觥酷槍?duì)絕對(duì)值,負(fù)整數(shù)指數(shù)冪,二次根式化簡(jiǎn)3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。20. (2012浙江溫州5分)計(jì)算:(3)+(3)2;【答案】解:原式=96?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算?!痉治觥渴紫扔?jì)算乘方,開(kāi)方運(yùn)算,然后合并同類二次根式即可求解。21. (2012浙江義烏6分)計(jì)算:|2|+(1)2012(4)0【答案】解:原式=2+11=2?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,負(fù)數(shù)的乘方,零指數(shù)冪。【分析】針對(duì)絕對(duì)值,負(fù)數(shù)的乘方,零指數(shù)冪3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。22. (2012江蘇常州4分); 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,零指數(shù)冪,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)算術(shù)平方根,零指數(shù)冪,特殊角的三角函數(shù)值3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。23. (2012江蘇淮安4分)計(jì)算 【答案】解:原式=??键c(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,零指數(shù)冪,有理數(shù)的除法?!痉治觥酷槍?duì)有理數(shù)的乘方,零指數(shù)冪,有理數(shù)的除法3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。24. (2012江蘇連云港6分)計(jì)算:【答案】解:原式3113?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,零指數(shù)冪,乘方?!痉治觥酷槍?duì)算術(shù)平方根,零指數(shù)冪,乘方3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。25.(2012江蘇南通5分)計(jì)算:; 【答案】解:原式=1413=3?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,有理數(shù)的乘方,零指數(shù)冪,負(fù)整數(shù)指數(shù)。【分析】針對(duì)絕對(duì)值,有理數(shù)的乘方,零指數(shù)冪,負(fù)整數(shù)指數(shù)4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。26.(2012江蘇南通5分)計(jì)算:【答案】解:原式= 。【考點(diǎn)】二次根式的混合運(yùn)算?!痉治觥扛鶕?jù)二次根式混合運(yùn)算的順序和法則分別進(jìn)行計(jì)算,再合并同類二次根式即可。27.(2012江蘇蘇州5分)計(jì)算:.29.(2012江蘇泰州4分)計(jì)算:; 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,零指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)算術(shù)平方根,零指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值4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。30.(2012江蘇無(wú)錫4分)計(jì)算: 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,乘方,平方根化簡(jiǎn),零指數(shù)冪?!痉治觥酷槍?duì)乘方,平方根化簡(jiǎn),零指數(shù)冪3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。31.(2012江蘇徐州5分)計(jì)算:;【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,算術(shù)平方根,零指數(shù)冪。【分析】針對(duì)有理數(shù)的乘方,算術(shù)平方根,零指數(shù)冪3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。32.(2012江蘇鹽城4分)計(jì)算: 【答案】解:原式?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,零指數(shù)冪,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)絕對(duì)值,零指數(shù)冪,特殊角的三角函數(shù)值3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。33.(2012江蘇揚(yáng)州4分)計(jì)算:(1)2(2012)0【答案】解:原式3113?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,乘方,零指數(shù)冪?!痉治觥酷槍?duì)算術(shù)平方根,乘方,零指數(shù)冪3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。34.(2012江蘇鎮(zhèn)江4分)計(jì)算:;【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,二次根式化簡(jiǎn),特殊角的三角函數(shù)值,零指數(shù)冪?!痉治觥酷槍?duì)二次根式化簡(jiǎn),特殊角的三角函數(shù)值,零指數(shù)冪3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。35. (2012廣東河源6分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,算術(shù)平方根,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)絕對(duì)值,算術(shù)平方根,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪4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。36. (2012福建廈門6分)計(jì)算:4(2)(1)240; 【答案】解:4(2) (1)240211211?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零次冪。【分析】利用實(shí)數(shù)的運(yùn)算法則進(jìn)行運(yùn)算即可。37. (2012福建莆田8分)計(jì)算:【答案】解:原式22l3 ?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,算術(shù)平方根,有理數(shù)的乘方?!痉治觥酷槍?duì)絕對(duì)值,算術(shù)平方根,有理數(shù)的乘方3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。38. (2012福建南平7分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,負(fù)整數(shù)指數(shù)冪,絕對(duì)值,零指數(shù)冪?!痉治觥酷槍?duì)有理數(shù)的乘方,負(fù)整數(shù)指數(shù)冪,絕對(duì)值,零指數(shù)冪4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。39. (2012福建寧德7分)計(jì)算:; 【答案】解:原式=。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)絕對(duì)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪3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。40. (2012福建龍巖5分)計(jì)算:;【答案】解:原式=5+11+1 =6。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,零指數(shù)冪,有理數(shù)的乘法,有理數(shù)的乘方。【分析】針對(duì)絕對(duì)值,零指數(shù)冪,有理數(shù)的乘法,有理數(shù)的乘方4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。41. (2012福建漳州8分)計(jì)算:【答案】解:原式=215=6?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,零指數(shù)冪,絕對(duì)值。【分析】針對(duì)算術(shù)平方根,零指數(shù)冪,絕對(duì)值3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。42. (2012福建三明7分)計(jì)算:; 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,絕對(duì)值。【分析】針對(duì)零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,絕對(duì)值3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。43. (2012福建福州7分)計(jì)算:|3|(1)0【答案】解:|3|(1)03122【考點(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,零指數(shù)冪,算術(shù)平方根。【分析】針對(duì)絕對(duì)值,零指數(shù)冪,算術(shù)平方根3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。44. (2012福建泉州9分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,二次根式化簡(jiǎn),絕對(duì)值,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪。【分析】針對(duì)二次根式化簡(jiǎn),絕對(duì)值,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪4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。45. (2012湖北黃石7分)計(jì)算: 【答案】解:原式?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,特殊角的三角函數(shù)值,絕對(duì)值?!痉治觥酷槍?duì)零指數(shù)冪,特殊角的三角函數(shù)值,絕對(duì)值3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。46. (2012湖北天門、仙桃、潛江、江漢油田5分)計(jì)算:【答案】解:原式=10+2000+2=2012.【考點(diǎn)】實(shí)數(shù)的運(yùn)算?!痉治觥肯冗M(jìn)行乘法運(yùn)算和開(kāi)方運(yùn)算,然后進(jìn)行實(shí)數(shù)的加法運(yùn)算即可。47. (2012湖北咸寧6分)計(jì)算:【答案】解:原式?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,負(fù)整數(shù)指數(shù)冪,二次根式化簡(jiǎn)?!痉治觥酷槍?duì)絕對(duì)值,負(fù)整數(shù)指數(shù)冪,二次根式化簡(jiǎn)3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。48. (2012湖北隨州8分)計(jì)算: 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,絕對(duì)值,特殊角的三角函數(shù)值,算術(shù)平方根?!痉治觥酷槍?duì)有理數(shù)的乘方,絕對(duì)值,特殊角的三角函數(shù)值,算術(shù)平方根4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。49. (2012湖南長(zhǎng)沙6分)計(jì)算:【答案】解:原式=2+23=0?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,算術(shù)平方根?!痉治觥酷槍?duì)負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,算術(shù)平方根3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。50. (2012湖南常德5分)計(jì)算: 【答案】解:原式=1121=1?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)絕對(duì)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值4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。52. (2012湖南張家界6分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值4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。53. (2012湖南岳陽(yáng)6分)計(jì)算:【答案】解:原式=.【考點(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,特殊角的三角函數(shù)值3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。54. (2012湖南永州6分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,絕對(duì)值,二次根式化簡(jiǎn),有理數(shù)的乘方,零指數(shù)冪。【分析】針對(duì)特殊角的三角函數(shù)值,絕對(duì)值,二次根式化簡(jiǎn),有理數(shù)的乘方,零指數(shù)冪5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。55. (2012湖南郴州6分)計(jì)算:.【答案】解:原式=21211=2121=2?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,特殊角的三角函數(shù)值,有理數(shù)的乘方。【分析】針對(duì)負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,特殊角的三角函數(shù)值,有理數(shù)的乘方4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。56. (2012湖南懷化6分)計(jì)算:.【答案】解:原式=【考點(diǎn)】實(shí)數(shù)的運(yùn)算,二次根式化簡(jiǎn),零指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)二次根式化簡(jiǎn),零指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪5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。57. (2012湖南衡陽(yáng)6分)計(jì)算:【答案】解:原式=1+32+3=5?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,去括號(hào),零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根?!痉治觥酷槍?duì)有理數(shù)的乘方,去括號(hào),零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根4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。58. (2012湖南株洲4分)計(jì)算:【答案】解:原式=【考點(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,絕對(duì)值。【分析】針對(duì)負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,絕對(duì)值3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。59. (2012湖南湘潭6分)計(jì)算:【答案】解:原式=231=2?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,零指數(shù)冪?!痉治觥酷槍?duì)負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,零指數(shù)冪3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。60. (2012四川成都6分)計(jì)算: 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,二次根式化簡(jiǎn),零指數(shù)冪,有理數(shù)的乘方。【分析】針對(duì)特殊角的三角函數(shù)值,二次根式化簡(jiǎn),零指數(shù)冪,有理數(shù)的乘方4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。61. (2012四川攀枝花6分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,特殊角的三角函數(shù)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)絕對(duì)值,特殊角的三角函數(shù)值,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪4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。62. (2012四川宜賓5分)計(jì)算:-【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,絕對(duì)值?!痉治觥酷槍?duì)負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,絕對(duì)值3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。63. (2012四川廣安5分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,二次根式化簡(jiǎn),特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)二次根式化簡(jiǎn),特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪3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。64. (2012四川內(nèi)江44分)計(jì)算:【答案】解:原式?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,有理數(shù)的乘方,零指數(shù)冪,立方根化簡(jiǎn),負(fù)整數(shù)指數(shù)冪。【分析】針對(duì)絕對(duì)值,有理數(shù)的乘方,零指數(shù)冪,立方根化簡(jiǎn),負(fù)整數(shù)指數(shù)冪5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。65. (2012四川達(dá)州4分)計(jì)算:4sin【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,零指數(shù)冪,二次根式化簡(jiǎn),特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)零指數(shù)冪,二次根式化簡(jiǎn),特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪4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。66. (2012四川廣元7分)計(jì)算:【答案】解:原式= ?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪,二次根式的化簡(jiǎn),零指數(shù)冪?!痉治觥酷槍?duì)特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪,二次根式的化簡(jiǎn),零指數(shù)冪4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。67. (2012四川德陽(yáng)7分)計(jì)算:.【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值,零指數(shù)冪,二次根式化簡(jiǎn)。【分析】針對(duì)負(fù)整數(shù)指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值,零指數(shù)冪,二次根式化簡(jiǎn)5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。68. (2012四川綿陽(yáng)8分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】零指數(shù)冪,絕對(duì)值,二次根式的混合運(yùn)算。【分析】首先計(jì)算0次方,以及開(kāi)方運(yùn)算,去掉絕對(duì)值符號(hào),化簡(jiǎn)二次根式,然后合并同類二次根式即可求解。71. (2012四川自貢8分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根,零指數(shù)冪。【分析】針對(duì)特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根,零指數(shù)冪4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。72. (2012四川瀘州5分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,零指數(shù)冪,立方根化簡(jiǎn),負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)有理數(shù)的乘方,零指數(shù)冪,立方根化簡(jiǎn),負(fù)整數(shù)指數(shù)冪4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。73. (2012遼寧大連9分)計(jì)算:. 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,二次根式化簡(jiǎn),負(fù)整數(shù)指數(shù)冪,平方差公式。【分析】針對(duì)二次根式化簡(jiǎn),負(fù)整數(shù)指數(shù)冪,平方差公式3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。74. (2012遼寧阜新5分)計(jì)算:【答案】解:原式?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,算術(shù)平方根,零指數(shù)冪,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)算術(shù)平方根,零指數(shù)冪,特殊角的三角函數(shù)值3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。75. (2012遼寧沈陽(yáng)8分)計(jì)算:(1)2+2sin45【答案】解:原式=11+22?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,絕對(duì)值,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)有理數(shù)的乘方,絕對(duì)值,特殊角的三角函數(shù)值3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。76. (2012貴州安順8分)計(jì)算:【答案】解:原式=。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,二次根式化簡(jiǎn),特殊角的三角函數(shù)值,絕對(duì)值,零指數(shù)冪?!痉治觥酷槍?duì)有理數(shù)的乘方,二次根式化簡(jiǎn),特殊角的三角函數(shù)值,絕對(duì)值,零指數(shù)冪5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。77. (2012貴州畢節(jié)8分)計(jì)算:【答案】解:原式=。.【考點(diǎn)】實(shí)數(shù)的運(yùn)算,二次根式化簡(jiǎn),負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,有理數(shù)的乘方。【分析】針對(duì)二次根式化簡(jiǎn),負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,有理數(shù)的乘方4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。78. (2012貴州六盤(pán)水8分)計(jì)算: 【答案】解:原式=。【考點(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,絕對(duì)值,零指數(shù)冪,特殊角的三角函數(shù)值,二次根式化簡(jiǎn)?!痉治觥酷槍?duì)負(fù)整數(shù)指數(shù)冪,絕對(duì)值,零指數(shù)冪,特殊角的三角函數(shù)值,二次根式化簡(jiǎn)5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。79. (2012貴州黔東南8分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,二次根式化簡(jiǎn),零指數(shù)冪,絕對(duì)值。【分析】針對(duì)負(fù)整數(shù)指數(shù)冪,二次根式化簡(jiǎn),零指數(shù)冪,絕對(duì)值4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。80. (2012貴州黔南5分)計(jì)算:;【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值?!痉治觥酷槍?duì)負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,絕對(duì)值,特殊角的三角函數(shù)值4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。81. (2012貴州黔西南7分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,立方根化簡(jiǎn),有理數(shù)的乘方?!痉治觥酷槍?duì)特殊角的三角函數(shù)值,負(fù)整數(shù)指數(shù)冪,零指數(shù)冪,立方根化簡(jiǎn),有理數(shù)的乘方5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。82. (2012貴州遵義6分)計(jì)算:【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,有理數(shù)的乘方,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根?!痉治觥酷槍?duì)有理數(shù)的乘方,零指數(shù)冪,負(fù)整數(shù)指數(shù)冪,算術(shù)平方根4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。83. (2012山東濱州6分)計(jì)算: 【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,絕對(duì)值,負(fù)數(shù)的乘方,零指數(shù)冪,算術(shù)平方根化簡(jiǎn),負(fù)整數(shù)指數(shù)冪?!痉治觥酷槍?duì)絕對(duì)值,負(fù)數(shù)的乘方,零指數(shù)冪,算術(shù)平方根化簡(jiǎn),負(fù)整數(shù)指數(shù)冪5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。84. (2012山東東營(yíng)3分)計(jì)算:;【答案】解:原式=?!究键c(diǎn)】實(shí)數(shù)的運(yùn)算,負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,零指數(shù)冪,二次根式化簡(jiǎn)?!痉治觥酷槍?duì)負(fù)整數(shù)指數(shù)冪,特殊角的三角函數(shù)值,零指數(shù)冪,二次根式化簡(jiǎn)4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
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