6.81减1.76,整式的加减计算题初一简单一点
6.81减1.76目录
小学五年级数学题11.070保留成整数是多少
答:11.070保留成整数,根据四舍五入,小数点后第一位数是0,即可舍去,那么就是11。
(望采纳)
整式的加减计算题初一简单一点
21.已知A=x3-2x2 x-4,B=2x3-5x 3,计算A B=______. 22.已知A=x3-2x2 x-4,B=2x3-5x 3,计算A-B=______. 23.若a=-0.2,b=0.5,代数式-(|a2b|-|ab2|)的值为______. 25.一个多项式减去3m4-m3-2m 5得-2m4-3m3-2m2-1,那么这个多项式等于______. 26.-(2x2-y2)-[2y2-(x2 2xy)]=______. 27.若-3a3b2与5ax-1by 2是同类项,则x=______,y=______. 28.(-y 6 3y4-y3)-(2y2-3y3 y4-7)=______. 29.化简代数式4x2-[7x2-5x-3(1-2x x2)]的结果是______. 30.2a-b2 c-d3=2a ( )-d3=2a-d3-( )=c-( ). 31.3a-(2a-3b) 3(a-2b)-b=______. 32.化简代数式x-[y-2x-(x y)]等于______. 33.[5a2 ( )a-7] [( )a2-4a ( )]=a2 2a 1. 34.3x-[y-(2x y)]=______. 35.化简|1-x y|-|x-y|(其中x<0,y>0)等于______. 36.已知x≤y,x y-|x-y|=______. 37.已知x<0,y<0,化简|x y|-|5-x-y|=______. 38.4a2n-an-(3an-2a2n)=______. 39.若一个多项式加上-3x2y 2x2-3xy-4得 2x2y 3xy2-x2 2xy, 则这个多项式为______. 40.-5xm-xm-(-7xm) (-3xm)=______. 41.当a=-1,b=-2时, [a-(b-c)]-[-b-(-c-a)]=______. 43.当a=-1,b=1,c=-1时, -[b-2(-5a)]-(-3b 5c)=______. 44.-2(3x z)-(-6x) (-5y 3z)=______. 45.-5an-an 1-(-7an 1) (-3an)=______. 46.3a-(2a-4b-6c) 3(-2c 2b)=______. 48.9a2 [7a2-2a-(-a2 3a)]=______. 50.当2y-x=5时,5(x-2y)2-3(-x 2y)-100=______. .(4x2-8x 5)-(x3 3x2-6x 2). 72.(0.3x3-x2y xy2-y3)-(-0.5x3-x2y 0.3xy2). 73.-{2a2b-[3abc-(4ab2-a2b)]}. 74.(5a2b 3a2b2-ab2)-(-2ab2 3a2b2 a2b). 75.(x2-2y2-z2)-(-y2 3x2-z2) (5x2-y2 2z2). 76.(3a6-a4 2a5-4a3-1)-(2-a a3-a5-a4). 77.(4a-2b-c)-5a-[8b-2c-(a b)]. 78.(2m-3n)-(3m-2n) (5n m). 79.(3a2-4ab-5b2)-(2b2-5a2 2ab)-(-6ab). 80.xy-(2xy-3z) (3xy-4z). 81.(-3x3 2x2-5x 1)-(5-6x-x2 x3). 83.3x-(2x-4y-6x) 3(-2z 2y). 84.(-x2 4 3x4-x3)-(x2 2x-x4-5). 85.若A=5a2-2ab 3b2,B=-2b2 3ab-a2,计算A B. 86.已知A=3a2-5a-12,B=2a2 3a-4,求2(A-B). 87.2m-{-3n [-4m-(3m-n)]}. 88.5m2n (-2m2n) 2mn2-( m2n). 89.4(x-y z)-2(x y-z)-3(-x-y-z). 90.2(x2-2xy y2-3) (-x2 y2)-(x2 2xy y2). 92.2(a2-ab-b2)-3(4a-2b) 2(7a2-4ab b2). 93.2x2-{-3x-[4x2-(3x2-x) (x-x2)]}. 94:-(7x-y-2z)-{[4x-(x-y-z)-3x z]-x}. 95:( 3a) (-5a) (-7a) (-31a)-( 4a)-(-8a). 96:a3-(a2-a) (a2-a 1)-(1-a4 a3). 97.4x-2(x-3)-3[x-3(4-2x) 8].
小学五年级数学题11.070保留成整数是多少
答:11.070保留成整数,根据四舍五入,小数点后第一位数是0,即可舍去,那么就是11。
(望采纳)
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