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有理数混合运算100题

(1) (-9)-(-13)+(-20)+(-2)(2) 3+13-(-7)/6(3) (-2)-8-14-13(4) (-7)*(-1)/7+8(5) (-11)*4-(-18)/18(6) 4+(-11)-1/(-3)(7) (-17)-6-16/(-18)(8) 5/7+(-1)-(-8)(9) (-1)*(-1)+15+1(10) 3-(-5)*3/(-15)(11) 6*(-14)-(-14)+(-13)(12) (-15)*(-13)-(-17)-(-4)(13) (-20)/13/(-7)+11(14)

1)-23÷1 *(-1 )2÷(1 )2; (2)-14-(2-0.5)* *[( )2-( )3]; (3)-1 *[1-3*(- )2]-( )2*(-2)3÷(- )3 (4)(0. (5+3/8*8/30/(-2)-3 (-84)/2*(-3)/(-6) 1/2*(-4/15)/2/3 -3x+2y-5x-7y 75÷〔138÷(100-54)〕

[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3) 5+21*8/2-6-59 68/21-8-11*8+61 -2/9-7/9-56 4.6-(-3/4+1.6-4-3/4) 1/2+3+5/6-7/12 [2/3-4-1/4*(-0.4)]/1/3+2 22+(-4)+(-2)+4*3 -2*8-8*1/2+8/1/8 (2/3+1/2)/(-1/12)*(-12) (-28)/(-6+4)+(-1) 2/(-2)+0/7-(-8)*(-2) (1/4-5/6+

(1)(-8)+10+2+(-1) =-8+10+2-1 =3 (2)25+(-12)+(-17)-(-6) =25-12-17+6 =2 (3)(-0.8)+1.2+(-0.7)+(-2.1) =-0.8+1.2-0.7-2.1 =-1.7 (4)5.6+(-0.9)+4.4=(-8.1) =10+(-9) =1 (5)5+(-6)+3+9+(-4)+(-7) =17+(-17) =0 (6)0+(-3.17)+(-5)+(+1.17) =[-(3.17+50]+1.17 =-(8.

1. 2100-21*53+2255 2. (103-336÷21)*15 3. 800-(2000-9600÷8) 4. 40*48-(1472+328)÷5 5. (488+344)÷(202-194) 6. 2940÷28+136*7 7. 605*(500-494)-1898 8. (2886+6618)÷(400-346) 9. 9125-(182+35*22) 10. (154-76)*(38+49) 11. 3800-136*9-

(1) (-9)-(-13)+(-20)+(-2)(2) 3+13-(-7)/6(3) (-2)-8-14-13(4) (-7)*(-1)/7+8(5) (-11)*4-(-18)/ (-17)-(-20)-20*(-10)(99) (-7)-10-13/3(100) (-20)+(-18)+11+9答案:1 -182 103/63 -374

1、(-23)+(-12) 2、 -16 +29 3、(-2008)+2008 4、 0+(-7) 5、 0-12 6、 -12-347、 8+(-2) 8、 (5-6)-(7-9) 9、-(-7)+(-2) 10、 1 —3 +5—7 +9—11+…+97—99 11、(+9)+(-7)+(+10)+(-3)+(-9) 12、(-4 )-(+5 )-(-4 )

(一)计算题: (1)23 (-73) (2)(-84) (-49) (3)7 (-2.04) (4)4.23 (-7.57) (5)(-7/3) (-7/6) (6)9/4 (-3/2) (7)3.75 (2.25) 5/4 (8)-3.75 ( 5/4) (-1.5) (9)( 1.3)-( 17/7) (10)(-2)-( 2/3) (11)|(-7.2)-(-6.3) (1.1)| (12)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|) (13)(-4)( 6)(-7) (14)(-27)(-

1、多项式-abx2+ x3- ab+3中,第一项的系数是 ,次数是 .2、计算:①100*103*104 = ;②-2a3b4÷12a3b2 = .3、(8xy2-6x2y)÷(-2x)= 4、一个正方体的棱长为2*102毫米,则

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