有理数混合运算专项练习题有复习资料.docx

10.11.12.13.14.（HW）+ T）1.25X18X ( 21 旱3)- ( - 24) x( 3 8)(7)2+口+ (-1 )J12-X- 32X (-1) + (-2)-93+ 4-£)X12+ ( -3 ) 23+ (-1 ) 20102009有理数专项练习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) 35, ( - 1) 2+20- ( -2) 1+ ( -4)& 口-(L0.5>4)X2- (-3) 29.9 ( -2-1) (一埒)-0.5X2DD乙，S乙.15. -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(-)218. ( -2) 2+6- ( - 3) X24-4-54- 9x 3(一与 X ( -4 ) 2-0. 25X (- 5) X (一 4)19. 8220. - 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-235423 ( -4) X ( -7+5) +0+.X(-,) X X乙291.1P<3nX (n+2)292. - 23 - ( - 3) 2X ( - 1 ) 2 - ( - 1 ) 30.7X14+27x (-15) +O.7xi-4X (-949 411 1( - 3) 24-3 - 12X ( - 3+ 4- 6)11 121(3- 2) X 12+124- (2+4)；1 25H- (3-2 2-2) X6._1 5 13( 4- 6+ 3+ 2)x( -12)；2(-2) 2+ ( - 2) 4- ( - 3) +| - 16| X ( - 2_1- 42H- ( - 2) 2+12+ ( - 3) X3_1 111301. - 0. 52+ ( - 2) 2 - I -22-4| - ( - 1 2) 3X ( 3) 3+ ( - 2)J 1 至 下302. 3 4+(-4) +0. 4X ( - 2) 24- ( - 3) - 20 X ( - 1)1111303. ( - 32 2) -5 4- (+3 7) + ( - 5 4) + ( - 2 7)3_12304. 25X 4- ( - 25) X 2+25X ( - 4)-I4-(-5)X-1+ ( - 2 ) 3- | - 32+l I305. 211 1306.307.308.309.310.(-2) 2- | - 7|+3 -2X(- 2)；1 1-36x(9-6- 18)；1X 3x2- ( - 3) 2；-I6- (1 -0.5)_ 2008 _( _ ) 2008.X (1+1) XX (1+W)X (I-A) 6103(1-|) XX (1-)59311.312.313.314.315.0. 25X ( -2) 3- 44- ( - 3) 2+l.(-#嚷-®-22-吟 12+ ( -6) 2X ( -1) 3-3.5-2.4X (3名 T)+ ( -3 ) 2 o 126欣+(4-1)+(1-0.6) x(T)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有理数混合350题参考答案(供参考)：.1. 原式=1X2+ ( - 8) 4-4=2+ ( - 2)=0.7皂工11112,原式二50-(9- 12+6) X36+49二50 - ( 9x36 - 12x36+ 6x36) -49 二50 - (28 - 33+6) +49 二(50 - 1) 4-49=494-49=1.(号)+ ( - 5).原式二 16义4=12+ ( - 5) =71_28 1.原式二 - 1 - 6x (2-9) X ( - 8)=-1 - 3=- 3 .3 . 原式二-8+ ( - 3) X18 - 94- ( -2) = -8-54-94- ( - 2)=-62+4. 5= - 57. 5.24_3_22.原式二-4 - 25-? ( - 8)=-4+ 25= - 3 251. ( - 1) 2+20- ( -2) 1+ ( -4)= 1+20-( -8)( -4) =1+28X ( - 4)=1 - 7= - 6._1 11.原式二1- (1 - 6) X2-9 = 1 - 6X ( -7) =6x ( -7) =- 6.J _5_8 J 1211.原式二 5x( - 12)- 21x( - 4)-2二-6+ 3 - 2= 2 - 2= -1 2.13_1 A(8+36 - 4) =- 40.(8+36 - 4) =- 40.4 .原式二(6+ 4- 12) X ( - 48) =- ( 6X48+ 4x48 - 12x48)=-.原式二 1. 25X ( - 8) - ( - 4) 4- ( 9) +1 - 1=- 10 - ( - 4) X 4+1 - 1= - 10+8 - 1= - 3.1 1 1 1.原式二18义 2- igx 3 - ( - 24) X 3+ ( - 24) X 8> (9 - 6) - ( - 8) + ( - 3) =3 - ( - 11) =14.33.原式=-2x - 9X 9-8+l=- 2x ( - 12) +1=18+1=19.5 . 原式二-3+6 - 8+9=4；.原式二-9-9X ( - 2) - ( - 2) Xl2=-9+18-4=56 .原式二-10X ( - 2) X5Xl=100.J. 1 n 117 .原式=-3 - -5+ (1- 25) X ( - 2) = -3 - -5 - 25=-3+5+2及 25121 18 .- 14 - (1- 2) -r3X|3- (-3)1=-1- 2+3 x|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 83 421.原式=-9 + 3+ ( 6- 6) X12- l=-6；Ax(区一心一国)Ax( -I) 122 .原式二 135 5 5 二135 二- 13.1 in n.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；_131.原式二 - 9义 3- 25X ( - 5) +60X 4- 2=-3- ( - 15+15 - 2)=-3+2= - 123 .原式二 8-84- ( -4) X ( -2) +0=8 - 4=4.金T)/二.原式，2-24X4X64-5X (-1)= 2- ( - 5) 4-5X ( - 1) =2._i n n _15 _2n n 理.原式二-弓+ 4+ 4 - 2 = -4 4+ 4 - 4 = -2；18X19+17.原式二-18 X ( - 36) =718；1 i11 A J： 7 j _4 L.原式=i - 16- ( - 64)xi6)4- - 8- 8- 2二i - ( 16+ 4)xi64- - 8- 8- 8=i -1-4(-2)一昱X (昱一里)xAxA=. (l.i) =37.原式二840331 315 315；_4.原式二- 9+9+25X (5) - 0.09 + 0. 9= - 9+9+ ( - 20) - 0. 1= - 20 - 0. 1= - 20. 116934.原式二- 1000 - ( - 9 ) X 16- 100=- 1099.3555155351 57 535.原式二 2x 7+ 7x 2 - 2x 7= 7x(2+2- 2)= 7x (2)=2.1 . 136. 原式=-4+16X 8- 0.28 ' 100= - 4+2 - 28= - 3014 15 337.原式二(18- 18+ 18) X18+ (3. 95 - 1.45) X6=17.38.39.40.41.13至一 9A+59一7q 2 原式2619 b2619T9 4 3原式二-16X ( - 2) + ( - 1) + ( 8+ 3 - 4) X24=- 32+ 8x24+ 3x24 - 4x24= - 32+27+32 - 18=9.(-1)20053 13+( 4- 6- 8)X244-| -32+5| = - 1+24x24 4-1 -4|=44-4=1(1-9-4+18)原式二22x|x (-D 515 1=2 x 5x ( -1)= - 2.42 .原式二-1 - L - 2+ 3x ( -3) = - 1 - -2-2> - 1+4=3.1 324354657 7.原式二 2 x 2 x3 x 3 x 义4 x 5 x 5 x 6 义6 =12(-1.25) X-?- 23- (-U) 2 .2品,53=- 2-8X 16=- 2- 2=-5_11 _5_1111.原式=-5 - 3-(1 - 5x 3)X9=- 5 3-(1 - 3)X9=- 5 3- 6=-11 3.43 . 原式二-10+84-4 - 12= - 10+2 - 12= - 20._9 _9_8©_8.原式二(4- 2- 8)X( - 9)=( - 8)X( - 9)=3.44 . 原式=3+ ( - 4) X84-44-2 - 94-9X ( - 1)=3 - 4+1=0._2_9_213345 .原式=64 - 81 -5+4x ( -4) 4- ( -3) )=64 - 81 - 3 15) =64 - 77 15=- 13 15.25871 1 1 1 2 1 3.原式二 5x( - 12)- 21x( - 4)- 2x 2x 2= - 6+ 3 - 8= 8.151 IL1 ip.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+( - 8)+(8)= 2- 8= 8；_42 J253 .原式二-3X 9 - 4X 3 - 8X 4= - 3 - 8= - 20 3；7 _82 255.原式=-8+ 4x 21+8= - 8+ 3+8= 3.6 18 76 17 256, 原式=-5+5+5x 8xi=- 5+ 5+ 5= 5；44,- 1 应- 4X - + 4+ 57.原式二-27义 99 4-4X (3) = - 33=0；. 原式二-16+4-3X ( - 1) =- 12+3=-9.58 .原式二L3+0= 1.3；原式二-13+12 - 7+38=-20+50=30；_1_1 _861.原式=-3 2+3. 5 + 一 2 9 - 9二0 一 3二-3；62.原式=163 - 63 - 259 - 411 = 163+237=400._4_4 463.原式二- (- 0.04+0. 04) + (8 - 9X1) X 9= - 1 X 9= - 9；4145 27425_27164.原式二(-3义 9-4X8+1X 3)+|2X 16 - 8 IX2= ( - 3-2+3)88 I X2=- 2x4X2= -4；165.原式二 16x16X1 -号24+我4-与X%9-4.66.原式二-4+4+4 - 8 - 9=-13.67.原式=22 - 4 - 2+4=20；.原式=(-8) +4+9- 4=1；_4 2 n.原式二(3+8- 4 ) X ( - 24) - 8=(- 32) - 3+66 - 8=23；71820.原式二(-30)4-( 30- 30- 30)口；_8_96.原式二(-9)义 5x ( - 27)义(- 4)=- 5 ；_1 _1.原式=(-1) - 6x (2-9) =6.115 15154.原式二-6+( - 12+ 8)= - 6+ 8二-15113_1_ 33.原式二(-2) 4- ( 4x 8) X 4+5=(-2) 4- 32x 4+5=- 2X32X 4+5=-48+5= 一 43.68 .原式二(-2) X9X ( - 1) - 124-3 - 1 = 18 - 12 + 2= 18 - 6=12.4333.原式=- 1X-9X9 - 2X ( - 2) IX ( - 4 - 2) X ( - 2)=-6x2=-9.76 .原式二-9-9+9X1=-9；12-32+2477 .原式二- 24X96+( -8)=- 1-8二-9.1.原式二-8义8-8义 8+64二 一 1._7_5 J.原式二 9义36 - 6x36+ 4x36=28 - 30+27=25.78 .原式=-5 - 4= - 9.79 .原式二27X4 - ( - 27) X ( - 8) =27X (4 - 8) =- 108._51_ J7.原式=(1 - 6) X (2-9) =6x ( -7) =6.1 111 11 1 J：L 1 120084.11+2 1+2+31+2+3+100= 1+2=1+2(可-而)=Toi._4 J 7 1.原式=3x 7x 4x 3x 3=i.2000 _1.原式二(- 1+3) + ( - 5+7) + ( -9+11) + ( - 1997+1999) =2X2 X 2=1000；88.原式二(11-13) + (12- 14) + (15 - 17) + (95 - 97) + (96 - 98) + (99+100) =- 2X 2+199= - 88+199=111；85 .原式二(1990+1) (2000 - 1) - 1990X2000=1990X2000 - 1990+2000 - 1 - 1990X2000=10 - 1=9；.原式二4726342+4726352 - (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；1 L 11 1998 99986 .原式二 2x (i - 3+3- 5+-+1997 - 1999)= 2x (1 - 1999)二 2x 1999=1999；.依据题意可知第n项就是a=l+3 (n- 1),即有244=1+3 (n - 1),n=82，,一共有 82 个数，XV 1+244=245, 4+241=245-,.原式二(1+244) X824-2=10045；32001 -1q2000q2000o v q2000.设原式那么 3ni=3+m- J , /. 2m=3 - J , m= J ；1+3 3+4 4+5 5+6 6+7 7+8.原式二 1X3- 3X4+4X5- 5X6+6X7-731 1 1 1 1 1 1 1 1 1 1二(1+3)-(3+4)+(4+5)-(5+6)+(6+7)-(7+8)1 1 11 11 7二 1+ 3 - 3 - 4+一 7 - 8=1 - 8= 8.1.原式=-4- ( - 1) X ( - 6) X6+9=-4-1+9=4.94 .原式二4+3-4-3=3-3=33 9 13913 0395 .原式二-2+ 4- 3(-8-1)= - 2+ 4- 3x ( -9)= 4+3= 41919_7996 .原式=5义 9+7X 9 - 12X 9= (5+7 - 12) X 9=0._1 J J-2) 4- ( - 4) =- 5 4- 2= - 5 4.1 _1 198.原式二-5 4-4+ 4- 4 4- ( -4) =-54-44- ( -2) + ( -4) =-54-5 2 1 35 12 399 .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；710L 原式二(-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=-1 - 0. 5X 3xL2- 9= -1+ 6 = 6.7_6 _49_6(- 2)x( - 7)+ 45x( - 7)1 1 J_ 11 I_49_6 7_6. (2 3- 3 2+i 45)4-( -1 6)=( 3- 2+45)x (- 7)= 3x (- 7)1 199811111105.105.n (n+1) -n n+1,.原式二i .一 小1. N+1998 . 1999口 . 1999二 1999.57 1106.原式-式1- 6x7=- 1+6=649.原式二i+( 16- 16)xi64- 9=i+( - 2)xi6x 49=-7x 49=107 .原式=-1 - 5X ( - 2) - 164- ( - 8) =- 1 - - 10+2= - 1+8=7.108 .原式=-1-2- (1-6 ) X6=-l-7=-8no,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(一 114.(-2134 -9115.+ (3-l)=_21+3l _171+ (-)(36 =2-I4 - 22)+ ( - 3) - ( - 3) 2。*乂与43=( -1 -4)=27+20 - 21=26；(-当-9X-|x8 3 9116.原式二-8x 4x 9+( - 5)88 3 9116.原式二-8x 4x 9+( - 5)81X5X ( - 4) =-8+1=-7.117.-32+5X ( - 5) - ( - 4)252+ ( -8)25=-9 - 8 - 16r ( - 8) - - 9 - 8+2-2515.118.原式二(24-9-4+18) 4-5= ( 24+5) 4-5= 245+54-5= 24+1=24;119.120.121.原式二-8X1 - 124-J _9 原式二-16义8+ 2x 原式二-16X ( - 4)1_1(- 4)=-8+48=403 15(-3)= -6 - 2=- 2；+ 5-5 - 2- 1=64 - 2 - 1=61.117151 33122.122.原式二-16x ( - 8) X1+ 8 X12+ 3x12 - 4 x 12= 2+ 2+28 - 45=17+28 - 45=0.1 3 5 525123.原式二-2x 4x 4x 6二64；g 1124.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. 512128 .原式二-5-3-9+7+2=-9 2；.原式原6；4工_13_38.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 .原式原.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 - IX 8x 5=- 4.0. 25x (-2 ) 3 - 4+ ( - 看)2+1+ ( - i ) 2008 1.3= 4x ( - 8) - 4X 4+1+1=-2 - 9+l+l二-2- 10+1 =-12+1=- 11；工_至1 一工2 至 g 上. ( 96 418) X ( - 36) = 9x ( - 36) - 6x ( - 36) + 4x ( - 36) - 18x ( - 36) =- 28+30 - 27+14= - 55+44=- 11.136 .原式二-20+3+5 - 7= - 19；J 211211137 .原式=(+6 5+4 5) + (+2 7- 1 7) - 5 3- 1=11+1 - 5 3 - 1=5 3；2 12 5140.原式二- 13X ( 3+ 3) - 0. 34X ( 7+7) =- 13 - 0.34=- 13.34；5 1141 .原式=8x 4x5X64=50；_4 _4 J _16_22142 .原式二-27X 9x 9+4+ 3=- 3 + 3+4二-3；_1 21111112143 .原式=-1 - ( 2- 3) X3X ( - 2+27) - | 8- 4|=- 1+6x75- 8=-1+12 2- 8=11 8.144 . 0 - P - ( - 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 1 (2+1)京3+1)15 (15+1)2 221146,原式= 1+2+2+2= 1+2X3+3X4+15X16二2义(1 X 2+2X 3+15X 16)ill A A _L 15=2x(i - 2+2- 3+15- 16)=2x(i - 16)= 8 .147.148.告(-6)145 1+工+ (二)48(睁一当8 6 429 5=4+( - 2) =2；X24”5-1+1 24- 8x24 - 6X24+4x24 4-5= - 1+1 24 - 9 - 4+18 4-5至 -L1 -1x( - 7)=-1 - 10x( - 7)=-1+2= 2二 - 1+ 24 x 5= - 1+ 24= 24._14 J_ J 至 至 j M149.原式二 -1-( 5-10-5)x(-7)=-i - (10-10-10) 150.原式二(125 - 4X25 - 1)( - 16 - 24+16) =244- ( -24) =- 1.1.原式=-9+27 + 9- 4x4 - ( - 1)=-9+3 - 1+1= - 6.151 .原式=4+3-1=6；_z152 .原式式-3. 5- 1.5- 1. 4+0. 4 +9=(- 6) -4-9=3.15_56135 6 _50_46 100.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 128155 .原式= 44 = 16= 5 .J _4_5.原式二-105义 5+105X 7 - 105X 3 - 178X6. 67+7. 67X 178= - 21 X3+15X4 - 35X5+178X (7. 67 - 6. 67)二- 63+60 - 175+178=0.原式原3 - 59 - 35+37= - 34；13 _旦 至13 ±7.原式二12-(5)x 12x(6)=12- 24= 8._5 _4377_17.原式二-3x 3x( - 5)x 4+( - 8)= 3+( - 8) = - 3 .156 .原式二4 -4-94- ( - 1) +0=4 - 4+9+0=9.-8X1X%5X ( -g) +15x4.原式二 2 253=-2-9+5=-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；3 1164 .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=33. 1 - 10. 7+22. 9 - 2. 3=43；167 .原式二-36H-4+5X1. 2= - 9+6=-3；_9_11168 .原式二-2x( - 9x 9+o. 8) 4- 5= 2x 5x 3二 2；1169 .原式=-4 - 6+2+3 X 3=-4- 6+2+1 =-7(1-0.5) xlx 10- ( -2 ) 2 - ( -1 ) 3 J171.3= - 1 - 0. 5X 3x6+1 =-1.*2,(14 +(3)+( 一2)2x(-3)_1 _1=-3+ 6-4X3=- 14.1 7)173.原式二-1 - ( - 2) X 3 X ( -6) =- 1+1=0；211.原式二-25 - - 8+ 5+ ( - 4)义(-2)=-25 - ( - 8+ 5)=-25+ 5= - 17 5；卫金 1(1-1) 19 _9 U (一 工)_19_1 _19.原式第Xa(-4+51 1 x2-U=-2x2 x_2-16-江-第二 16 (或 16).1 旦.原式二(21+6X3X3 - 25) X 7=50X 7= 7_4 J _4 1J _8.原式二 9x(-2)- 9- 24-( - 4)= - 3 - 9-1- 9= - 9.176 .原式二- 9 - 50 + 25 - 1=- 12；1_41179. 原式二 - 1 - 2 - ( 1 - 6)义(9 - 4)=6 ._4_1_4_4 10 - 3+ ( - 5) - ( - 22) - 54- ( - 4) = - 3 - 5+4+20=21 - 5=20 5；1 21 _1110H- 2- ( - 1+1 3) X6=104- ( 2- 3) X6=104- 6X6=10X6X6=360；180. 18+324- ( -2) 3- ( -4) 2X5=18+32H- ( -8) - 16X5=18 - 4 - 80=18 - 84= - 66；&& 里2222181. -7X(- 7 ) +19X ( - 7 ) -5X(- 7) = (- 7+19 - 5) X ( - 7) = (- 12+19) X ( - 7 )22=7X ( - 7 ) = -22.182. 原式=8 - 2X9+36=8 - 18+36=26.2 原式=4+ ( - 4) 4- ( - 3) + 16义(-16) =4+6 - 1=9.183. 原式二-12-4二- 16；1184. 原式= - l+2x9-9=- 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. 原式二48义(-6) +48 义 4+48 X ( - 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)=-13- 3x ( - 3) X ( - 3) = -13-4 3=- 6；1 1 ± 1 1 _1_189. - 36X ( 9- 6- 18) = ( - 36) X 9+ ( - 36) X ( - 6) + ( - 36) X ( - 18) = - 4+6+2= - 4+8=4；11 17 1190. - I3- (1 -0.5) X 3x 2 - ( -3) 2= - 1 - 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) 10X 2+ ( - 2) 34-4=lX2+ ( - 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) -i=-2；28 3Q27 _14198 .原式二-1 - ( 36- 36+ 36- 36)x( -36)=-1+11=10；_9 _4_9199 .原式=4+9义(-4)= 9x( - 4)=-1；_1200 .原式=3-2-8+ 4x4=-127._1.原式=-1+8X 4-4=-3.1.原式二-9+9x ( - 27) 4- ( - 1) =- 9+