有理數(shù)乘除法專(zhuān)項(xiàng)練習(xí)71題有答案

1、2.3.4.5.6.7.有理數(shù)乘除法專(zhuān)項(xiàng)練習(xí)71題（有答案）皂).3612-2.5年8.249.10.(10)+(5)X(一一家（一T（一一一>372412.13.14.34、-1，瓦421-(-3)x(一)0163.2.515)1215.25x（一百）23.(XJ-i-iA).461213616.(-0.5)-rl-|x(-11)624.-10-5x1.517.一2.5Ur)25.(-2)+(-/)-(-1)X3.£018一.一'-'-1-1'-26.-：丁,-1J22519.14）X（一片）5127.2.5+(-三)X(-=)+(4)16820.(一

2、工-1+1)-A.2452028.（-12）弓考4229.30:二二1-.31.(-3x(io-苞-里)53639fx3義號(hào)（一2932._3.5工X(8440."33.31041.(-1-1)-0.8X(-§).3742.34.(-16)+Zx(一3)3635.141343.(+1.25)+(-0.5)土(-1)O(V)+(-0.25)3544. -18+(+3.25)+(-21445. (T0)+(8)+(0.25)38.3;(W)x至:(一百)76346.(-24)：1：,547. (+22)X(-33)X(-4)X048. (-32)-4X(-8)49. .L、一5

3、0. (_X0.125X£一弓)X(-8)51. -125+(-25)-64+(-4)45-辱仔)X361-552. -53. -二I，'；99595-1,53X0,7541.53x1-4x1.5354. :55. 亍二W56. _1：_,1:4357. 4會(huì)58. 二、占59. 吟-(V)-Y)7-擊60. 2ax(-)xW+i_i53211461 .(2+(一工)673141462 .'：'II.!.3563.68.(-5)X6XV)吟64.+3bb一)69.(-慨)2乂(-2-1)+埒65.（一尹弋）入66.(5)X(0.75)(5)X0.125+(5)

4、X(0.125)70.67.-6.5)XC-2)H-(-)4-(-5)571.-i有理數(shù)乘除法71題參考答案:1.原式=(-±-至+豆)X24361214.原式小X臣X54由)x(-X)1516=2x24-也X24+-HX24=1620+22=14.36122.原式=-_§xJx(_1)254=1.3,原式=2?x(-18)X(-3-1)x18xA,333=164.(10)+(-5)X(-2)=2X(-2)=-4.5.(1)(-2)X(-1)524二(-E)X(-2)X(526.原式=(一-)X(-)235325x(-)8,16Y5乂8x1.254151615=(lx.?x

5、1)=1.23867.原式=-(-1)X(-義)=13.36721X(-42)278+15,=-20.15.原式=Z-X(-_L)X(-62514,7x5x5_1251461216 .原式=-X-X(-11)211R117 .2.5-X(-2)-(168_5X16Xlx1_12584418 .原式=(-7.5)X(-4)=3.4)x2x(-1_),/15X2LX2X1x_62510541419.原式=(-上)x(-U)5103x(3)73=(=4.132220,原式=(-A-l+1)x20245=9(-42)(-42)+去X(-42)0I，上=14+18-4=0.=-Ax20-AX20+X20

6、=105+4=-1124521.原式=(A-+L)X(-42)3211410.1-(-3)X(-1),X(-42)31121X(42)+3X(-42)=1*(m*(-)，=?339=14+22-9=-1.16,5X(-)x(-)=-1.25812.(-1+l+5.3.一(-),23641222qI電)一一專(zhuān))357X(-36)-X(-36)h-X(-36)4612=27+30-21=-18.23.原式=(工-衛(wèi))X(-36)461275x(36)-；X4636)1712X(36)1153-X(-12)+-X(-12)+-X(-12)-X(-12),2364=64-10+9,=1514,=1.7

7、R13.原式二X(一9)X2=(-2)X2=-4.37=63+30+51=18.11924 .原式10XX=5552325 .原式=(-2)X(y)X()X3=2X2X3X3=-36.26.原式=32四+(-32)2540.14)+()=(-£)X37=32-i2x25-L)=32.1§x_L322532(又(-苣)=4.32=(32+型)25_1_=32x_L+_i2x_1_=1+_!_=1_1_.32322532505041,原式=-9x旦X（-且）=xWx旦=迫27.原式=一-X(2)X(-1)x(-1)JxUx42.原式=(一_)X(-43lx1-1=8444328

8、.原式=(-12)X9+2=-3316X±?=24243.原式=1.25+0.5+下,8=且乂24，=44529.原式=(_£-且+JL)+242424_L)=旦乂2424(24)=44.原式=18+3.25+乩,4=18X_£X139=32133,45.30.原式=一12fx383><3+93X3=?X(一原式=10X_i4=546.8.1+9.1)332547.31.X(1025T48.原式=12+(-1-)5(+22)X(-33)(-32)+4X(一=12Xx(8)=4)X0=010=(-1)10(353-)x(-幺)x53525=(-8)X(-

9、8)=64/2、,49.75-(-X(32),75x3X3,675=75XX2245=6+1+-=250.(上)X0.125X72-1)X(-8)332.原式=-X_X27,31=(=)x±x7833.310一共（34.(16)=(-16)X=20.35.原式=0一.、236.原式=(-)3X(-)X(-4)51.125+(52.4525)64+(4)=5+16=21.9126X36+5,=45X36(9U）125,36TX36-5,6=(4528+3330)+5,=(7858)+5,=20+5,=49一939_353.-X(-92)+(-)X34q+3*23上,995952232=

10、SX92-X34-2,、2=X(9211),=X81,=18.99一，、F37.原式=-X（624)31(24)卷X(24)4354.1.53X0.75+1.53X+X251.53,=20+18+8=638.原式=3X(-7537537-)X-X(-)=3X-X-X-=13653652=1.53X(0.75+0.5+0.8),=1.53X(1.30.75),=1.53X0.55,=0.841574539.原式=28X-X-X*=10.4714z119、55.(2-3-+1)+32121721/6、(-+77,32127=X(-_§)-lx(-)+&X7372712=一56.2

11、+32,=33.1,=1.222原式=81X(J)X(一工）=一57.58.=一9316361=36。.662-1x6=2X6X6=72.6原式=(1+_3+_5)x(32)248lx(-32)+Jx(-32)+Jix(-32)=1659.248，2420=28(+-)-(-)-(+-)+(-=(=-77351+1工)X(-105)735X(105)+-lx(105)工35105X(105)=一60 .=一61 .1535+21=50+21=29.原式=皂*(-4)X_5_xg,56115(AlxlxJLxJ),=JL.5611525原式(+)x(14)=567314x(14)-X(14)+上X/、9（-14）一二x6731464.(1；-2,+3-4龍）-（A5610153C=(g5衛(wèi)+國(guó)典61015X(-30),=JX(30)-Ux5630),=54+85111+136,=221165,=56(30)+圖X(10),30)-3x(1565 .原式=81XJxlx1=199466 .原式=(5)X(0.750.125=(-5)X(-1)=5.67 .原式=Ux2XxUl.225268 .原式=30X(-9)X154=24x34=669 .原式&X(-)x5=_