有理數(shù)混合運(yùn)算習(xí)題

1、（一）計(jì)算1r1.-10+8+-13=554. 23-17-(+23)=5. -7-9+(-13)=6. -11+|12-(39-8)|=7. -9-|5-9|=24.一個(gè)數(shù)的，等于0平方的相反數(shù)，則這個(gè)數(shù)是知二，那么X(-234)2=.26 .若有理數(shù)mKn<0,則mVn2的符號(hào)為.abc|肥。|27 .己知有理教機(jī)也c滿足回+圖+©=1,則Abc28. 935的末位數(shù)字是.2g.已知回十上二o,則州La.|b|ab1 111V30. 2-C2+-=333j31. 376X280X0X421*5+(-g)X2E=37632. (37-34)5+64X(-82)=(二)選擇55

2、 .不能使式|+|=|+|成立的數(shù)是A.任意一個(gè)數(shù)；B.任意一個(gè)正數(shù)；C.任一個(gè)負(fù)數(shù)；D.任一個(gè)非負(fù)數(shù).59 .等于60 .-1.7+-6L-0.”-a+2.*0.3口等于36JJ62.-66-6+(4-84-24)等于63.-1164 .1巨/。,65-工等于1冢I2065 .等于66 .12!卜(-3；|K1-l)的結(jié)果是67. -4義-IX_的結(jié)果是3I2)41f568. 0.24Xl-x-的結(jié)果是6I14j69. +X2+(-2)2的值是7Q.乂1工的值是71. 3+2X+(-34)的值是72. 若ab<|ab|,則下列結(jié)論正確的是A.a<0,b<0;B.a>0

3、,b<0;C.a<0,b>0;D.ab<0.73 .下列不等式中正確的是A. -22X32>-22X3>-2X32>(-2X3)2;B. (-2X3)2>-22X3>-2X32>-22X32;C. -2X32>-22X3>-22X32>(-2X3)2;D. -22X3>-22X32>(-2X3)2>-2X32.74 .(2002-1002)+104的結(jié)果是75 .下列數(shù)中與（-7-2）5相等的數(shù)是76 .下列各數(shù)中與2X64X(-29)相等的數(shù)是77 .下列各數(shù)中比0小的偶數(shù)是78 .數(shù)歷三-3丫-

4、1與它的相反數(shù)，絕對(duì)值和倒數(shù)這四個(gè)數(shù)中，最3j小的數(shù)是79 .下列各式中正確的式子是80 .下列各式中正確的式子是81 .下列各式中錯(cuò)誤的式子是82 .下列各數(shù)中最大的數(shù)是83 .下列各數(shù)中最小的數(shù)是84 .如果則/與工的大小關(guān)系是a86.如果等式a=a2成立，則a可能的取值是A.1個(gè)；B.2個(gè)；C.3個(gè)；D.以上結(jié)論都不對(duì).88.四個(gè)各不相等的整數(shù)a,b,c,d,它們的積abcd=9,那么a+b+c+d的值是A.0;B.4;C.8;D.不能確定.93.己知a二!，b=-Fc=-F貝U工十(日十-吧的值是352ab94. 0一*2一5+二-X100的值是10095. -0I3-IO3X53的值

5、是96. -|!的值為97.+X(-6)3的值是（三）計(jì)算105.-52+7+99.106.7-11-6.107.0-(-3)+(-2)*112.413-74-(-5+26)114'(12115.fin-12-13+-6)108.117.4120,116.-84-(16-3)+7.10?.12118.+110.31'34)咪+(7+J21-+一2311312122.0-2-卜小網(wǎng)十那123.1312)喘W124.126.127.2-363l+11i1+r7710制LU129,-39-3rBO.(-3)X132.-21134. (-3)=.135. X(-4).136. (-32

6、)+(138. -5.7140, f-5-1 314k(-3143,(-125)>144.334+3卜哈卬T)、產(chǎn)丁雷卜小662J|131.八1M715j+1-.勾(2、E133.(6卜可137.-3-X2-1-11.2)2.3512)卜1泡C"廣(卜(-0:X/+(-2/.41)X(-01).<(-8)X0+-171.148)21'(-25)X7-1-X(-5).i5)1r13128.-(137-3.41)+3-2145.（一3）乂卜回中訃卜引11146.-0.1X(+2.4)xI1x(-100)X1?1.147.27-13.5X-2.7-(-2-).3)914

7、8-2卜訃因卜力卜：149.-42+-l|jx-|X(-0.1)2-0.125.150.井25）+心（7。）小茅.151.(-033)+-1+(-9)x(-+-L).152.（-2刎-3小弓+1129154.(-l)3xl|x1-2jx(-2.5)x|+(-a45)x2-|j.153.(嗎 ”1.25)十 J+ (70)義-1 乂(-0.12).I ”155.十25，X(-1廣|X卜(-O.S)“Q171.+X4-F36-(-I)25X2.18271271IS173.(-1)12X5+(-1)X52-12X5+(-1X5)2.174.(-2)(-3)(-36)+(-1)2°X63.1

8、75.3*x+乂1一2.27''2176.177.-X(-2-3)-xl623178.179.271 (T產(chǎn) x 5.729廣(一34(-322 I 2)-(3X2)X(-3-2).184.(33 -23)(2-3尸十180.3X(-2)2+(-2X3)2+(-2+3)2.181.I1-+075-FIX2+1.312j242d&1S2.(2-2-)(-l4X3X-l)4X7.185.2-(2+1X3+1+3-.22)22186.(-3)(-5)(-3-5)+(-3X5)+|5-7|3.157.11+21X3-X4+1.3333188. 2+42x(-8)X16-32.1

9、94. (-42x26+13x2)+(-3)7x(-3)5.195. (3-9)4X23Xr11198. 4-3-+1-34-r-0,01a)-(35)2.2. I524j111。199. X(95-94).nil202. (-6)a(-0l/-(-33-43)-4-+(-4*)+0025./fif3iV203. -XX&1Lb7)46)(43204. (3W"$+19+-.1549foV15206.(-4.66)XL-5.34*-+5X±+0+56-X-.+ 23 x-(-I)94l3j78207.225.20%211.212,213.215.216.219.22

10、0.221.222.223.-1L+L3xfin父)*Jn3一十一,53)(-5)3+X2-2x4+5,.7+9x3-3x5+3)之._x8+2乂+2.31dsr-185175jxl7-百十132-r1臚33499x131一(一歹十8)X-xl3-2-42X2+85415.r-3xiT-3-72+5.3X(0+9#WX(-3).,-3，x2+(-3"X4-5X(-2)”一(-；.?ll(-7)X-X(-6)-025*一342(f226.311(-3)X(-7)X_Ji-724114+_X一024.227.228,229,230.47-+-X(-12)-6一(一3卜田+(-3)5|X(

11、一習(xí).+-xf-l)s*(-5)乂(一2尸.3515中匕卜2-31-5m1t0.2L-2+£2040.240,00223L232.9卜小-習(xí)233.上一%234.(-5) X (-3) X(-4) 2+(-2) 3X(-8) X(-3)-(-12)X3 + 24.153x-x178235.37(-2)*0,3了十(一獷XQ.37-(-2X_239.18123十靠240.-18-23X(-4)3+(-43)+X8+(-3)2+(-32).（七）求值271 .如果有理數(shù)a,h二滿足我求且十包+£的所有可能冏網(wǎng)II取值的立方和.272 .如果有理數(shù)a,b滿足聲Q,且鼠+2b=Q,求-g的值.273 .如果也十？=0,試比校-士與心的大