初一上册数学整式加减、整式化简求值、有理数运算的练习题,更多更好.
初一上册数学整式加减、整式化简求值、有理数运算的练习题,更多更好.
七年级 有理数计算题
一、 有理数加法
(-9)+(-13) (-12)+27 (-28)+(-34)
67+(-92) (-27.8)+43.9 (-23)+7+(-152)+65
| +(- )| (- )+|― | 38+(-22)+(+62)+(-78)
(-8)+(-10)+2+(-1) (- )+0+(+ )+(- )+(- )
(-8)+47+18+(-27) (-5)+21+(-95)+29
(-8.25)+8.25+(-0.25)+(-5.75)+(-7.5) 6+(-7)+(9)+2
72+65+(-105)+(-28) (-23)+|-63|+|-37|+(-77)
19+(-195)+47 (+18)+(-32)+(-16)+(+26)
(-0.8)+(-1.2)+(-0.6)+(-2.4) (-8)+(-3 )+2+(- )+12
5 +(-5 )+4 +(- ) (-6.37)+(-3 )+6.37+2.75
有理数减法
7-9 ―7―9 0-(-9) (-25)-(-13)
8.2―(―6.3) (-3 )-5 (-12.5)-(-7.5)
(-26)―(-12)―12―18 ―1―(- )―(+ )
(-20)-(+5)-(-5)-(-12) (-23)―(-59)―(-3.5)
|-32|―(-12)―72―(-5) (- )―(- )―
(+ )―(- )―(- )― (- )―3―(-3.2)―7
(+ )―(- )― (+6.1)―(-4.3)―(-2.1)―5.1
(- )―(-1 )―(-1 )―(+1.75) (-3 )―(-2) ―(-1 )―(-1.75)
-8 -5 +4 -3 -4 + +(- )―
0.5+(- )-(-2.75)+ (+4.3)-(-4)+(-2.3)-(+4)
有理数乘法
(-9)× (- )×(-0.26) (-2)×31×(-0.5)
×(-5)+ ×(-13) (-4)×(-10)×0.5×(-3)
(- )× ×(-1.8) (-0.25)×(- )×4×(-7)
(- )×(- )×(- ) (-8)×4×(- )×(-0.75)
4×(-96)×(-0.25)× ( -1 + )×56
( ― ― )×36 (-36)×( + - )
(- )×(8- -0.4) (-66)×〔1 -(- )+(- )〕
25× -(-25)× +25× ( + - + )×72
有理数除法
18÷(-3) (-24)÷6 (-57)÷(-3) (- )÷
(-42)÷(-6) (+ )÷(- ) (- )÷9 0.25÷(- )
-36÷(-1 )÷(- ) (-1)÷(-4)÷ 3÷(- )×(- )
0÷〔(-3 )×(-7)〕 -3÷( - ) (-24 )÷(-6)
2÷(5-18)× 1 ÷(-3)×(- ) - ×(- )÷(- )
( - )÷(- ) ( - + )÷(- ) -3.5 ×( -0.5)× ÷
-1 ÷(-1 )×1 ×(-7) ×(- - )÷
÷(-2 )- × - ÷4 0.8× +4.8×(- )-2.2÷ +0.8×
五、有理数混合运算
(- )×(-15×4) (-2.4)
2÷(- )× ÷(-5 ) 〔15 -(1 ÷1 +3 〕÷(-1 )
×(-5)÷(- )×5 -( - + - )÷(- )
-13× -0.34× + ×(-13)- ×0.34 8-(-25)÷(-5)
(-13)×(-134)× ×(- ) (-4 )-(-5 )+(-4 )-3
(-16-50+3 )÷(-2) (-0.5)-(-3 )+6.75-5
178-87.21+43 +53 -12.79 (-6)×(-4)+(-32)÷(-8)-3
- -(- )+|-1 | (-9)×(-4)+ (-60)÷12
[(- )-1 + ]÷(- ) -|-3|÷10-(-15)×
-1 ×( - )÷2 (2 -3 +1 )÷(-1 )×(-7)
-2× - - - -2× ÷
× + × × × -
+ + - × - - +
0- ÷3× × ÷ - × - ÷
×(- +1) ×0 6+ × -10+8÷ -4×3
- - -(1-0.5)× × ×
(1)在代数式x+2yz,3a,5x2+4x-1,1,x,mnp,,中有(a )?
(a)4个单项式,2个多项式 (b)5个单项式,3个多项式 (c)7个单项式 (d)8个整式
(2)下列各组单项式中,不是同类项的是( c )?
(a)与x (b)4xy2与-4y2x (c)x5y与x5 (d)4与-4
(3)与a-b互为相反数的是( d )?
(a)a+b (b)a-b (c)-b-a (d)b-a
(4)下列计算中正确的是(d )
(a)5a3-6a3=-a (b)3a2+4a2=7a4 (c)7a+3a2=10a3 (d)a2+4a2=5a2
2.计算.
3ab-4ab+8ab-7ab+ab
=ab
7x-(5x-5y)-y
=2x+4y
23a3bc2-15ab2c+8abc-24a3bc2-8abc
=-36abc
-7x2+6x+13x2-4x-5x2
=4x
2y+(-2y+5)-(3y+2)
=3-ky
1.(-3a)²·(2a-a-3)
2.9x(-2x²-xy+y²)·(-xy)
3.3x(x²-2x+1)-2x²(x+1)
4.(二分之一ab+a²-b²)·2ab-(-ab)²
5.a²(a²+a+1)-a(a³-1)
6.a^3b-ab+3a^2b^2-8-5a^2b^2-4a^3b-6
3.3ab-4ab+8ab-7ab+ab=______.
4.7x-(5x-5y)-y=______.
(1)-2n-(3n-1)=-5n+1
(2)a-(5a-3b)+(2b-a)=-5a+5b
(3)-3(2s-5)+6s=15
(4)1-(2a-1)-(3a+3)=-5a-1
(5)3(-ab+2a)-(3a-b)=3a-3ab+b
(6)14(abc-2a)+3(6a-2abc) =14abc-28a+18a-6abc=8abc-10a
(7)3(xy-2z)+(-xy+3z) =3xy-6z-xy+3z=2xy-3z
(8)-4(pq+pr)+(4pq+pr) =-4Pq-4PR+4pq+pr=(-4+1)pr
5.23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.
6.-7x2+6x+13x2-4x-5x2=______.
7.2y+(-2y+5)-(3y+2)=______.
11.(2x2-3xy+4y2)+(x2+2xy-3y2)=______.
12.2a-(3a-2b+2)+(3a-4b-1)=______.
13.-6x2-7x2+15x2-2x2=______.
14.2x-(x+3y)-(-x-y)-(x-y)=______.
16.2x+2y-[3x-2(x-y)]=______.
17.5-(1-x)-1-(x-1)=______.
18.( )+(4xy+7x2-y2)=10x2-xy.
19.(4xy2-2x2y)-( )=x3-2x2y+4xy2+y3.
20。5mn-(5mn+(2m的2次方n+(m的2次方n-3mn))-2m的2次方n
1.(x+二分之一)²+(x-二分之一)²+(x+二分之一)(x-二分之一)
2.(x+3y)²+2(x-y)(x+y)+(x-3y)²
3.[(a-二分之一)²+(a+二分之一)²](2a²-二分之一)
4.(x+2y+3)²-(x-2y+3)(x-2y-3)
我这里只有整式化简,行么?
你去买一套不就好了吗,比网上的好的多
、(3a-7)(3a+7)-2a( -1) , 其中a=-322、[(3x- y 2)+3y(x- )] ÷[(2x+y)2-4y(x+ y)] ,其中x=-7.8, y=8 检举回答人的补充 2009-08-17 09:12 (1).(x-1)-(2x+1)=-x-2(2).3(x-2)+2(1-2x)=-x-4(3).3(2b-3...
(1) (-8)*(-0.25)*(-0.125)*(-12)*(-0.1)
(2)-17+17/(-1)的17次-5的2次*(-0.2)的3次
答案(1)-3/10
(2) -33.8
你自己去看看