有理数混合运算提高350题专项练习(附复习资料).docx

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)2009J112.18X ( 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 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(-<)X-1-84- 1-2+41211；(2 一“)+ 一)25.26.27.9 4 1836 ；-32X4- E( -5) 2义(- 240+ ( - 4) xl-2 3548- 23 ( -4) X ( -7+5) +0+.X(-,) X X乙由扃袅小IF (I2)291. - 23 - ( - 3) 2X (-I)?- ( - 1) 30.7X14+27X (- 15) +0.7xi4x (-15)949 411 _1(- 3) 24-3 - 12X ( - 3+ 4- 6)11 11工(5 3 - 2) X 12+12+ (2+4)；1 154- (3-2 2-2) X6.1 5 13( 4- 6+3+2)x ( -12)；2_1_( - 2) 2+ ( - 2) 4- ( - 3) +| - 16| x ( - 24).1- 4之+ ( - 2) ?+12+ ( - 3) X31 111- 0. 52+ ( - 2) 2 - I -22-4| - ( - 1 2) 3X ( 3) 3+ ( - 2) 4J 1553 4+(-4) +0. 4X ( - 2) 2+( _ 3)- 20 X ( - 1 ) 20051111( - 32 2) -54- (+3 7) + ( - 5 4) + ( - 2 7)3 _1 125X 4 - ( - 25) X 2+25X ( - 4)_ 14_(-54 X-1+ ( - 2 ) 3- | - 32+11306.307.308.309.310.306.307.308.309.310.(_ 2) 2_ | - 7|+3 -2X(- 2)；1 1-36x(9-6- 18)；1-r- (1 - 0. 5)X 3x2- ( - 3) 2；2009(吟_ 2008 _( _ ) 2008.X (i+1) X-X (1+需)X (1-1)(1-|) X X (1-1)59301. 211 1311.312.313.314.315.0. 25X ( -2) 3 - 4+ ( - 3) 2+1.(-号 £)X 18)；-22 -吟 12+ ( -6) 2X ( -1) 3-3.5-2.4X (3出 T)”(-3)2 o 126.成+ (-7-1) + (1-0.6) X (一4)2”(-1当-2044235X ( - 6) - ( -4) 24- ( -8)；316. (3. 9 - 1. 45) 24- ( - 0. 125) +49. 34；21317. ( - 1) 5- - 3X ( - 3) 2- (-13) + ( - 2) 2.211318. ( - 3) 3- (2 - 1.5) 34-2 3x ( - 8) 2+ 2x ( - 2) 2- ( 2) 3.321. 23X 10+ ( - 2) X ( - 5) 2319. 20+ ( - 12) - ( - 18)327. -22+ ( -2) 3 - ( -2) X ( -3)；一1.6+(T)2x( - 3) 3 - 22329.3；3_ 5 二 1323. (力百F)瓦(1_。2)Tx (-4) 2324. 933-I2008 - q.1252008 X (- 8) 2009 + ( - 12) 62x ( -1) +| -2 I3325. 5- 0.5+ ( - 15) - ( - 17) - | - 12|；330. - 14+1 - (1 -0.5X2) 4-|2- ( - 3) 2|；(3)331. ( - 3) 2-22- ( -5) 2X69 X ( - 2) 4._14X ( - 3) 2 - 13+ ( - 2) - | - 43|；4 3- 32 - ( - 2) 2- (1 - 5x 4) 4- ( - 2).1111 1 1(- 11 7) X 5+ (+5 7) X 5+ ( - 137 3) 4-5+ (+113 3) 4-5；2- 8 - - 7+ (1 - 3x0.6) 4- ( - 3).336. N/337. - ( - 1 ) 2005+4+( - 2) - | - 12|.338. ( - 4) 2X ( - 2) 4- ( -2) 3- ( -4).(1.2 - 3.7 ) 2X ( - 1 ) 2005 4 339.25X (1) 2- (- 25) xl+25340. 2542-1+ (-1 -341. 4- ( - 0.75) +77(-)+ 1H342. ( - 1) 3X 103X1717-|x 15X (2-U) +学)343. o: 3533层+ ( -21) +0.4X ( -61)344. 3544;-痣)3x0.5 乙 X31卜(一爷X 103-0.1争.X1A (0.12 510 x 89)5(-2) +(T)2X (A) 3 x | -孕| - ( - 5)345.347.348.349.350.351.-0.252H-2+ ( 8+ 3-3. 75) X2424(-1) - (i) X (-3.2) + (-2号)4 2525-32 x(T)- 0. 8 -r ( - 2-1)35.(-24)(-1) 2城+(心46X 吟+21-2.75) o J()60 ：工一至-4. 037X 12+7. 537X 12 - 36X ( 96参考答案(供参考)：1. 原式= 1X2+ ( - 8) 4-4=2+ ( - 2)=0.7 n 2I 1112.原式二50 - ( 9- 12+ 6) X364-49=50 - ( 9x36 - 12x36+ 6x36) +49=50 - (28 - 33+6) +49 二(50 - 1) -49=4949=1.3.4.原式二16X+ (一5)5)=71_28 31原式二 1 - 6x (2 - 9) X ( - 8) = - 1 - 3 =-3 .原式二-8+ ( - 3) X18-94- ( -2) = -8-54-94- ( - 2)24322原式二-4 - 25-r ( - 8)=-4+ 25= - 3 25=-62+4. 5=- 57. 5.17. ( - 1) 2+20- ( - 2) 3H- ( -4) =l+20- ( - 8) 4- ( - 4) =1+28X ( - 4) =1 - 7= - 6.1j 278 .原式二式-(1 - 6) x2- 9 = 1 - 6X ( -7) =6x ( - 7) =- 6.z 且 & 工 12 _i 1.原式二 5x( - 12)- 21x( - 4)- 2二- 6+ 3 - 2= 2 - 2= -1 2.13_i A10.原式二(6+ 4- 12) X ( - 48) =- ( 6x48+ 4x48 - 12x48)=-(8+36 - 4) =- 40.4911.原式二 1.25义(-8)-(-4) 4- ( 9) +1 - 1=- 10 - ( - 4)X 4+1 - 1=- 10+8- 1=-3._1 1 _1 1.原式二18X 2- 18X 3 - ( - 24) X 3+ ( - 24) X 8= (9 - 6) - 8) + (- 3) =3 - ( - 11) =14.g £ 卫.原式二- 2x - 9X 9-8+l=- 2x ( - 12) +1=18+1=19.12 . 原式二-3+6 - 8+9=4；.原式二-9-9义(-2) - ( - 2) Xl2=-9+18-4=513 .原式二-10义(-2) X5Xl=100.J. 1 X 皂史.原式二-3 - - 5+ ( 1 - 25) x( - 2)二-3-5 - 25= - 3+5+ 25= 25_1 _1 _1 1.- 14 - (1 - 2) ： 3X |3 - ( - 3) 2| = - 1 - 2 ： 3X |3 - 9| = - 1 - 2x 3x6= - 1 - 1= - 2.9 4.原式=4+6+6+4 - 5X 5x 9=4+3 - 4=3.-Ixi6- 0. 25X ( - 4) X ( - 5) X ( - 4 ) 2=- 10- 80=- 90.原式二8J _4.原式=-9 + 3+ ( 6- 6) X12- 1=-6；Ax(区一心一国)Ax( -I) 2.原式=135 5 5 =135 =- 13._1 I 豆 H.原式二 4 - 3+ 4 - 3 =3 - 6= - 3；11 41.原式二- 2 X 11-8X 2=-2-4=-6；8-9+2.原式二 36 X ( - 36) - 1；1 J 1.原式二-9义 3- 25X ( - 5) +60* 4-2=-3- ( - 15+15 - 2) = - 3+2= - 126 .原式=8 - 84- ( - 4) X ( - 2) +0=8 - 4=4.金T)/二.原式，2-24X4X64-5X ( - 1) = 2- ( - 5) -5X ( - 1) =2._1 13 H _15 N至皂理.原式=- 2+ 4+ 4 - 2 = - 4+ 4+ 4 - 4 = - 2；18X19+17.原式二- 18 X ( - 36) =718；1111A17 J J I.原式=1 -16-( - 64)x 164- - 8- 8- 2=i -(16+4)x 164- - 8- 8- 8=i-1-4- ( -2)一昱X (昱一里)xAxA=. (l.i) =37.原式二840331 315 315；_4.原式=- 9+9+25X (5) - 0. 09 + 0. 9=- 9+9+ ( - 20) - 0. 1= - 20 - 0. 1= - 20. 1169.原式二 - 1000 - ( - 9 ) X 16- 100=- 1099.3555155351 57 5.原式二 2x 7+7x 2 - 2x 7= 7x ( 2+ 2 - 2)= 7x (2)=2.j .1. 原式二-4+16X 8- 0.28 ' 100= - 4+2 - 28= - 3014 15 3.原式二(18- 18+ 18) X18+ (3.95 - 1.45) X6=17.41 .原式二 25242 .原式二-1 - - 2+ 3x ( -3) =- 1 - -zL L L L L L L43 .原式= 2x2><3x3x4x4><5：(-1.25) X1-23 (-1444 .5311 J145 .原式=-5 - 3- (1 - 5x 3) X9=-53- 46. 原式二-10+84-4 - 12= - 10+2 - 12= - 20._9 _9_8_2747 .原式二(4- 2- 8)X( - 9)=( - 8 ：48 . 原式=3+ ( - 4) X84-44-2 - 94-9X (-_2_949 .原式=64 - 81 - - 5+4x ( -4) 4-(=2 x 5x( -1)=- 2.>-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) 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- 25) 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._4£9.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 - (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.原式二-64-( - 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+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+11) + ( - 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+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 , /. 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= 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 ( - 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 - 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.原式二114.(-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(-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 - ( - 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(212 - 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 - 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 - I1 - ( - 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 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- 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= - 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.原式二-2X48=- 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172.36= - 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 x"2-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= - 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= - 66；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 - 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；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 ( -