有理数混合运算提高350题专项练习(附复习资料).docx

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1、有理数提高专项练习350题（有答案）1. ( - 1) 2义2+ ( - 2) 34-4.(-4)2X(V)+30+ ( -6)_14, - I4- 6x (2- ( -3) 2) X ( -2) 3( - 2) 3+ ( - 3) X ( -4) 2+2 - (- 3) 2. ( - 2)|l-xo.2|,- 22 -54- ( - 2) 37.8.9.10.(-1) 2+20- ( -2) 1+ ( -4)1- (1-0.5X1) x 2- ( -3) 2( -2-1) (一埒)-0.5X2DD乙，S乙.(旱)。()6 4 12481.25X11.(7)2+U+(_1)2009J112.1

2、8X ( 21 旱3)- ( - 24) x( 3 8)13.14.2-X- 32X (-1) + (-2)-93+ 4-)X12+ ( -3 ) 2403+ (-1 ) 201015. -32- ( -3) 2X ( -2) - ( -2) X ( - 1) 2|-A|16. 2832(W3+ ( - 283) 2003 - 10 X ( - 2) 4-5 X ( - 1 ) 2002-3- -5+ (1-0.2X、)-(-2)5_1- r17. - r- (1 - 2) +3X |3 - ( - 3) 2|.至(-)2( -2) 2+6- ( - 3) X24-4-54- 9x 3(一与

3、X ( -4 ) 2-0. 25X (- 5) X (一 4)81 2- 324-3+ ( 2- 3) X12 - ( - 1) 2010；-X+ ( xW/x (-1至)5 1351335 .(+4)+ (-24)-(-29 -(+34)4343(-2=- 1+4=3. 7_ 7x 5 x 6 x 6 二12X 2 1 All二-2 - sx 16= - 2 - 2= - 5211(1-3) X9=-53-6=- 11 3._8)X ( - 9) =3. 1)=3 - 4+1=0.21313-3) =64 - 81 - 3 15) =64 - 77 15= - 13 15(I-9-4+18)

4、 xlx ( -1)竺2_9_4 J-9_4 J39 .原式二 - 16义(-2) + (-1) + (8+ 3- 4) X24=- 32+ 8x24+ 3x24 - 4x24= - 32+27+32 - 18=9. 3 13. ( - 1) 2005+ ( 4 - 6 - 8) X244-| -32+5| = - 1+ 24x24 4-| -4|=44-4=125871 1 1 1 2 1 350.原式二 5x ( - 12)- 21x ( - 4)- 2x 2x 2= - 6+ 3 - 8= 8.15i 15i 10.原式二(13- 15+4 - 14) X ( - 5)= ( 13- 2

5、5) X ( - 5)=4 13.51 . 原式二-10+32 - 12=10；113 2 2152 .原式二-16-f( - 8)+(8)= 2 - 8= 8；W 工 g 国 153 .原式二-3X 9-4X 3-8X 4=- 3- 18=- 20 3；2出 1 154 .原式二-8+ 4x 21+8= - 8+ 3+8= 3._61_8 7_61J_2. 原式=-5+ 5+ 5义 8x i= - 5+ 5+ 5= 5；44,_ 116,- 4.原式=- 27x 99 4 - 4X (3) = - 33=0；55 . 原式二-16+4-3X ( - 1) =- 12+3=-9.56 .原式二

6、L3+0= 1.3；. 原式二-13+12 - 7+38= - 20+50=30；1 1国.原式- - 3 2+3. 5 + - 2 9 - 9=0-3=-3；61 .原式二 163 - 63 - 259 - 411=163+237=400._49.原式二- (- 0.04+0.04) + (8 - 9X1) X 9= - 1 X 9= - 9；41425 274 1 425_27164 .原式二(-3X 9- 4X8mx3)-4-I2X 16- 8 I X2=( - 3-2+3)4-| 88 I X2=- 2X4X2= -4；77 一24+4X24 一 竽乂2465 .原式二 16x16X1

7、 - (834) =1 - (- 9+56 - 90)=1+9 - 56+90=44.66 .原式=-4+4+4-8-9=- 13.67 .原式=22 - 4 - 2+4=20；1 168.原式=(-8) + 4+9 - 4=1；4 1 H69 .原式二( 3+ 8- 4 ) X ( - 24) - 8= ( - 32) - 3+66 - 8=23；718 2C70 .原式二(-30)4-( 30- 30- 30)=i；_9_8_9671 .原式二(-9)义 5x( - 27)X( - 4)= - 5 ；_1 _172 .原式二(-1) - 6x (2-9) =6.115 15154.原式二-

8、64-( - 12+ 8)= - 64- 8= - 15113_1_ 33.原式二(-2) 4- ( 4x 8) X 4+5= ( - 2) 4- 32x 4+5= - 2X32X 4+5=-48+5=-43.73 .原式二(-2) X9X ( - 1) - 12+3 - 1=18 - 124-2=18 - 6=12._4 JJ J76 .原式二-1X-9X9-2X ( - 2) =- IX (-4-2) X ( - 2)=-6X2-9.77 .原式二-9-9+9X1 =-9；12-32+2478 .原式二- 24X96+ ( - 8) = - 1 - 8=- 9.1.原式二-8X8-8X 8

9、+64二 一 1.753.原式二 9x36 - 6x36+ 4x36=28 - 30+27=25.79 .原式二一5一4二-9.80 .原式=27X4 - ( - 27) X ( - 8) =27X (4 - 8)=-108._51.原式=(1 - 6) X (2-9) =6x ( -7) =6.114.11 11 1 J：L 1 1200. 1 l+2+l+2+3+l+2+3+-+100=H2(1-I-TOO-Toi) =1+2 c-Toi) =Tol. _4 j 7 281 .原式二3x 7x 4x 3x 3=i.2000 1.原式=(- 1+3) + ( - 5+7) + ( - 9+1

10、1) + ( - 1997+1999) =2X2 X 2=1000；8887 .原式二(11 - 13) + (12 - 14) + (15 - 17) + (95 - 97) + (96 - 98) + (99+100) =- 2X 2+199= - 88+199=111；88.原式二(1990+1) (2000 - 1) - 1990X2000=1990X2000 - 1990+2000 - 1 - 1990X2000=10 - 1=9；.原式=47 2 6 342+4 7 2 6 35? - (472634 - 1) X (472634+1) - (472635 - 1) (472635

11、+1) =47 2 6 342+47 2 6 3 52 - 47 2 6 342+1 - 47 2 6 352+1=2；11 L 11 1998 999.原式二 2x (i - 3+3- 5+-+1997 - 1999)= 2x (1 - 1999)= 2x 1999=1999；91 .依据题意可知第n项就是须二1+3 (n- 1),即有244=1+3 (n- 1),An=82,一共有 82 个数,XV 1+244=245, 4+241=245-,.原式二(1+244) X824-2=10045；32001 一 1q2000q2000o v q2000.设原式二m,那么 3m=3+m- J ,

12、 /. 2m=3 - 3,，口二，X 3；1+3 3+4 4+5 5+6 6+7 7+8.原式二 1X3- 3X44X5- 5X6+6X7-731 1 1 1 1 1 1 1 1 1 1=(1+3)-(3+4)+(4+5)-(5+6)+(6+7)-(7+8)1 1 11 11 7=1+ 3 - 3 - 4+- 7 - 8=1 - 8= 8.1.原式二-4 - ( - 1) X ( - 6) X 6+9=-4- 1+9=4.2 1C _2_895.原式二4+3-4-3=3-3=3乜3卫(-9) = 4+3= 4J1.原式二-2+ 4- 3(-8-1)= - 2+4- 3x1919_79.原式=

13、5X 9+7X 9 - 12X 9 =(5+7-12) X 9=0._1 J J-2) + ( -4) =- 5 4- 2= - 5 4.1 _1 1.原式二 - 5 4-4+4 - 4-r ( -4) =-54-44- ( - 2) + ( -4) =-54-5 2 1 35 12 3.原式二-3 6+2 5 - 2 6+7 5= ( - 3 6- 2 6) + (2 5+7 5) = - 6+10=4；100,原式=-8X 4x 9=-8；7101 .原式=(-12) X ( - 36)J J _9102 .原式=6+( - 6)- 14x9 4J+ 4x ( - 36) - 6x ( -

14、 36) - ( - 18) X ( - 36) =21 - 27+30 - 10=14；14(-9) - -1+1-0；17 1.原式二-1 - 0. 5X 3x2- 9= - 1+ 6= 6._1 1 _4_17 J_49 J J 67 出更 出, (2 3 - 3 2+1 45)4-( -1 6)=( 3- 2+ 45)x( - 7)=3x( - 7)+( - 2)x( - 7)+45x( - 7)星二L上= -2+3- 1515 - 15.1 二1 . 1111L 1 1998. .n (n+1) -n n+1, .原式二-N,一&京 &+适羽一旃豆】一旃&旃_57 1.原式=-i+i

15、 - 6 x7=-1+6=61 9491 X X.原式二1+( 16- 16)xi64- 9=i+( - 2)xi6x 49=-7x 49=7103 .原式二-1 - 5X ( - 2) - 164- ( - 8) = - 1 - - 10+2= - 1+8=7.104 .原式=-1-2- (1-6)X6=-l-7=-8X-X-|x8no.原式二 342=30.1.原式=(2 - 9) X1 - (1 - 6) =-7X (1 - 6) =- 7X 6=- 6.111 .原式二-16X ( - 4) + (5 - 5) - 2+ ( - 1) =64+0 - 2 - 1=61.113.原式二1

16、14.(-2134 -9（一表+.3)1+3/吗=27+20 - 21=26；115.116.117.118.119.120.121.(-I4 - 22)+ ( - 3)原式二-8义 4x 9+( - 5)_8-32+5 X (-5) - ( - 4)25X5X ( - 4) =-8+1=-7.24- ( -8)25-9 - 8 - 164- ( - 8) = - 9 - 8+2=-25原式二(24-9-4+18) 4-5= ( 24+5) 4-5=245+54-5= 2415.(-当-9X-|X原式二-8X1 - 124-J _9原式二-16X 8+ 2x原式二-16X ( - 4)11(-

17、4) =- 8+48=40_1 2小(-3)= -6 - 2=- 2； + 5-5 - 2- 1=64 - 2 - 1=61.11151 33122.122.原式二-16x ( - 8) X1+ 8 X12+ 3x12 - 4 x12= 2+ 2+28 - 45=17+28 - 45=0.1 3 5 525123.123.原式二-2x 4x 4x 6二64；31124.124.原式二- 24X1 - 24X ( - 4) - 24X 6- 24X ( - 8) =- 24+18 - 4+15=5.125.原式二（7金_假设）-磔+5片）IO O-1 - 9- - 10；126 原式原2 - (

18、 - 8+4 - 2) =32+8 - 4+2=38；127.原式二-4+ ( - 3) X (16 - 8) +94-2=-4-24+4. 5= - 23. 51 1128 .原式二-5 - 3 - 9+7+ 2= - 9 2；.原式原6；4工_138.原式二- 6+ 5 - 6+ 5=-6+10=4；1.原式二-9. 2 - 7. 1+3+6. 2+2. 9= - 4. 2= - 4 5；129 .原式=3. 6+41. 8-12.6- 51. 8=-19；1 19 2 3 4 5 91130 .原式二- 8+ 8 - 5 - 5 - 9 - 9= 4 - 2= 4.131 .原式二(21

19、2 - 480) 4-5X ( - 1) =2684-5=_5 J 1132 .原式二-16+16 -1x8x5=- 4.0. 25x ( - 2 ) 3 - 4+ (2+1+ ( - 1 ) 2008 JW.3= 4x ( - 8) - 4X 4+1+!=-2- 9+U + 1=-2 - 10+1= - 12+1= - 11；工一至上 王 卫 工136 . ( 96 418) X ( - 36) = 9x ( - 36) - 6x ( - 36) + 4x ( - 36) - 18x ( - 36) =- 28+30 - 27+14= - 55+44=- 11.137 .原式二-20+3+5

20、 - 7= - 19；J 211221138 .原式=(+6 嚏4 5) + (+2 7- 1 7) - 5 3- 1=11+1 - 5 3 - 1=5 3；2 12 5140 .原式二-13义( 3+ 3) - 0. 34X ( 7+ 7) =- 13 - 0.34=- 13.34；.原式二 8x 4x5X64=50；442 16 22142,原式二-27x 9x 9+4+ 3= - 3 + 3+4= - 3；_1 21111113.原式二-1 -( 2- 3)义3义(- 2+27) - | 8- 4|=- 1+ 6x75 - 8=- 1 + 12 2- 8=11 8.143 . 0 - I

21、1 - ( - 1) + ( - 1.95) 3X0. 5X0- | -51+5=0- 1+1+0 - 5+5=0._1 _1.原式二-9X 3x 25X ( - 5) - ( - 60) X 4=-3X- 15+15= - 3X0=0.1 12 (2+1) 3 (3+1)15 (15+1)222111144 .原式n+2+2-+2=1+2X3+3X4+15X16=2义(1 X 2+2X 3+15X 16)ill A A A=2x(i - 2+ 2- 3+ 15- 16)=2x(i - 16)= 8.147.148.-日x (-6)一心吸一=4+ ( - 2)=2；X24 + 5-=-1+1

22、24- 8x24 - 6x24+ 4x24 4-5= - 1 + 1 24 - 9 - 4+18 4-5145 129-1+ 24 x 5= - 1+ 24= 24.至 28 J- 至51.原式二-1 - ( 5-10-5)x(-7)=-i - (10-10-10)x(-7)=-i-l Ox(-7)= -1+2=2149 .原式二(125 - 4X25 - 1) H- ( - 16 - 24+16) =244- ( -24)1.1.原式二 - 9+27 + 9 - 4x4 - ( - 1) = - 9+3 - 1 + 1= - 6.150 .原式=4+3-1=6；_z151 .原式式-3. 5

23、- 1.5- 1. 4+0. 4 4-9= ( - 6) 4-9=3.g 七 里235 6 0_46 100154,原式二47- (18 4 - 8 ) X 25 4-0. 46= 47 - 8 X 25 X 23= 5 X 46=20；- 8+48 405.5 诬 128-X-155 .原式= 44 = 16= 5 .J _4_5.原式二- 105X 5+105X 7- 105X 3- 178X6. 67+7. 67X 178= - 21 X3+15X4 - 35X5+178X (7. 67 - 6. 67)= - 63+60 - 175+178=0.原式原3 - 59 - 35+37= -

24、 34；一至 13上)=12-24=8.717(- 8)= 3+ ( - 8)=- 3 ._13_5.原式二 12- (5)x 12x(至3 J 1.原式二- 3x 3x( - 5)x 4+156 .原式二4 - 4 - 94- ( - 1) +0=4 - 4+9+0原.-8XX%5X ( -?) +15x.原式二 225工-2-9+5二-6.157 .原式二(-5) X ( - 0. 75 - 0. 125 - 0. 125) = ( - 5) X ( - 1) =5.158 .原式二-20 - 18 - 12+10= - 40；21164 .原式二-4- 4-3=-4；1165.原式二-2

25、X48=- 24；至 A166 .原式二-2. 5X17X4X0. 1=-2X17X4X 10=- 17；.原式原3. 1 - 10. 7+22. 9 - 2. 3=43；167 .原式二-36+4+5义 L 2= - 9+6= - 3；J 11168 .原式二-2x( - 9X 9+0,8)+ 5= 2x 5义 3二 2；1169 .原式二-4 - 6+2+3 X 3=-4-6+2+1 =-7-14- (1-0.5) xlx 10- ( -2 ) 2 - ( -1 ) 3 J171.3= - 1 - 0. 5X 0X6+1= - 1.(1-1) +(T)+ (-2) 2x (-3)堤172.

26、36= - 3-F 6 - 4X 3= - 14.173.174.175.176.177.原式二-1 -1 7)(-2)x 3 x( -6) =-1+1=0；Z11原式二-25 - - 8+ 5+ ( - 4)义(-2)二-25 - ( - 8+ 5)=-25+ 5= - 17 5；卫 工工二(l-l) A 11 ( -1) 19原式蜀xXx (-W+工 4 1 x2-U=-lx1 x2-江-第=16 (或 16)._1_1 _50原式二(21+6X3X3 - 25) X 7=50X 7= 7434 12 4 2 8原式二 9x(-2)- 9 - 24-( - 4)= - 3 - 9+ 9=

27、- 9.91 1916=-2-T916178.原式二- 9 - 50 + 25 - 1=- 12；_1_41179. 原式=-1 - 2 - (1 - 6) X (9 - 4) =6 ._41_4_4 20 - 3+ ( - 5) - ( - 22) - 54- ( - 4) = -3- 5+4+20=21 - 5=20 5；121 _11104- 2- ( - 1+1 3) X6=104- ( 2- 3) X6=104- 6X6=10X6X6=360；180. 18+32+ (-2)-(-4) 2X5=18+32H- ( -8) - 16X5=18 - 4 - 80=18 - 84= - 6

28、6；2222222222181. -7X(- 7 ) +19X ( - 7 ) -5X(- 7) = (- 7+19 - 5) X ( - 7) = (- 12+19) X ( - 7 )22=7X ( - 7 ) = -22.182. 原式二8 - 2X9+36=8 - 18+36=26.2 原式=4+ ( - 4) + ( - 3) + 16x ( - 16) =4+6 - 1=9.183. 原式二-式-4=-16；1184. 原式二-1+2义9-9=- 1；原式二 - 10+8X9-12=-10+72-12=50185. 原式二-8 - 2X ( - 3) +3-1=- 8+6+3 -

29、1=0_1 J186. 原式二48X ( - 6) +48X 4+48X ( - 12) =-8+36-4=24.187. (+7) + (-8) - (+3) - ( -4) =7-8-3+4=11 - 11=0；1131721 2188. - 1 3 - 2 3+ ( - 2) X ( - 3) =- 1 3- 3x ( - 3) X ( - 3) = - 1 3- 4 3= - 6；1 1 A 1J：A189. - 36X ( 9- 6- 18) = ( - 36) X 9+ ( - 36) X ( - 6) + ( - 36) X ( - 18) = - 4+6+2= - 4+8=4；

30、11 17 1190. -1- (1 - 0. 5) X 3x 2 - (-3)2x 3x (2-9) - -1+ 6= 6；( - 0. 25) X 1.25X ( - 4) X ( - 8)=(- 0. 25) X ( -4) X1.25X ( - 8) = 1X ( - 10)10；191. ( - 1) 10X2+ ( - 2) =4=1X2+ ( - 8) 4-4=2 - 2=0.2 J 1 卫工竺.原式=-9 -(3 - 5x 2) X ( - 2)=-9+ 5 X 2= - 5 .197 .原式二 2- 2- 12- 12=( -1)-1=-2；28 3Q27 _14199,原式二 -1 -( 36- 36+36- 36)x( -36) =-1+11=10；_9 _4_9200.原式=4 + 9X ( -