有理数混合运算习题

/12150.151.152.154.153.155.171.173.174.175.176.177.178.179.7扑㈠.25尸(-0.33”1I2J3小卜尹［扑(W)・-21J-长乂色「一吐23/ 45J11 29,F2 5(—1)乂1—乂一、’77「甲(-4^)X(-1.25)-X4185]>3I2J+(一10)乂13XC-0.12).+36—271 2717-(-1VX2—.18(-l)2X5+(-l)X52-l2X5+(-lX5)2.(—2)(—3)(—36)+(—1)20X63.蒙xJ-+(-22)X1-2.

27 2r11r1AX(-2-3)--xl

6 23(-32)^(3X2)X(-3-2).l[3,271-(-l)3LX5,729]-(-32).43X(-2)2+(-2X3)2+(-2+3)2.2 1I11-+0.75+—x2+-.3 2a21S2.(2--2-)(-l4X3X-l)4X7.133.1,11+-X(-32)+l-2 2i (133.1,11+-X(-32)+l-2 2i (iX{-3^+1--X32+1--X9.2 I22J1S5.134.2 2) 2 2.(-项-5)十(-3X5)十|5-..1I+2IX31x4+1.3 3 3 3188.2+42X(-8)X16^32.(-42X26+132X2) (-3)7X(-3)5.(3-9)4X23X(-0.125)2.TOC\o"1-5"\h\z「1 1 7^193.4--3-+1--3453-(-0.013)-(3.45)a.I5 2 4j(—1)34 x(9，—g4).(-6)2-(-0.1)+-(-32-42)--R 0.025..U7j146)204.(3.75)3-103 +206.4 9(-4.66)X--5.34--+5X

9 4(I)+0-5678207.52Xn4208,-4lr—十13X4-3209.+1.3x211.：(-5)3+3.4X2-2X4+53]2.212.213.(24-5.lX3-3X5+33)2.215._2「诟1S1-1———175jr4x17-2l5j216.215.220.rS-^2x_2」HJ132-riV913-(-30+S)x-xM--2--3乂

5I44j-42X|+ X(-5/^(-2)4+-7.2+5.3X(-2)2+93X(-3).f—)Xlx[43-(-3)2]2-1-+3.llj8 3[—3*x2+(—3lM4—3X .225.226.f4X--0.24.227.(-12)-6-(-3)2+|24+(-3)5|X(-5).228.l+£-£xf-l)6lx(-5)x(-2)2.3515 ;229.1

-0.32一卜;23・；■十2-31--531 10.2230.1 3 0.3Q.l0.40,2 4 0,002231.1517232.lxlx312233.x(-5)v±0.2L+l5xlxlJ234.234.(-5)X(-3)X(-4)#(-2)3义(-8)X(-3)-(-12)X3^24.235.239.235.239.240.37(-2)xq,37+(-2)2xq,37-(-23)x1001812I§〃[36j-18-23X[(-4)3+(-43)+0.2X8+(-3) (-32)].（七）求值.如果有理数诙h,c满足自玩户口，求2+9+上的所有可能同罔|c|取值的立方和..如果有理数anb满足a壬口，且且十2b二口，求-4的值.如果电+二=。，试比较一汽与世的大小.b|a| b.如果|a-1|+(b+2K=0,求(a+b)由的值..已知Ix|=2,|y|=3,求x+y§的值..已知x是绝对值最小的有