人教版七年级数学上册整式的加减法专项练习题精选3Word格式.docx
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8ab+5a2b2-7+7ab2-4a2b2-5-6ab
7x3-8x2-7y2-9y-5x2-y-y2
(-4a2b+b3)-(-5a2b2+9b3)
(4x2y+5xy2)-(6x2y+xy2)
-7b2+[-7b2+(3b2-4b)+8(b2+9b)]
3+9(1-a)-(1-a-a2)-2(1-a+a2-a3)
(-a2b+8ab)+(8a2b+5ab)
(8z2-5z+7)+(6z2-2z+5)
(9m2-4m+1)+2(7+3m-5m2)
x2y-2x2y-100m2+16.5m2
-—a2bc+—cba2a2b-0.9a2b
65
-—mn-—mn+4-9x2y-4.5x2y
ab+2a2b2-7-2ab2-5a2b2+1-7ab
3x3-9x2+2y2+y-x2-y-y2
(-a2b-9b3)-(-7a2b2-b3)
(5x2y+xy2)+(x2y-xy2)
7y2+[-3y2-(2y2+3y)-4(y2+4y)]
7+9(1-a)+(1-a-a2)+2(1-a+a2-a3)
(a2b-5ab)+(-a2b+7ab)
(3t2-5t+8)+(6t2+4t+8)
(2n2-2n+3)+5(6+3n-4n2)
x2y+7x2y-90a2+6.5a2
-—a2bc-—cba29a2b+0.5a2b
36
—mn+—mn+5-3x3y2-8.5x3y2
25
ab-5a2b2+6+6ab2+9a2b2+6-3ab
3x3-4x2-8y2+9y-9x2+2y+y2
(a2b+2b3)+(a2b2+4b3)
(-4x2y+xy2)+(4x2y+xy2)
8x2+[7x2+(6x2-3x)+5(x2-7x)]
20+3(1-a)-(1-a-a2)-4(1-a+a2-a3)
(-6a2b+4ab)+(8a2b-ab)
(6a2+5a+3)+(5a2-4a-9)
(3y2+2y+4)+2(9-2y-3y2)
-2x2y-2x2y-40c2-9.5c2
-—a2bc-—cba25a2b+0.5a2b
45
-—mn+—mn+44x2y2-2.5x2y2
43
ab+7a2b2-3+8ab2+3a2b2+5+6ab
9x3-9x2+5y2+5y-3x2+y+y2
(-a2b-7b3)-(a2b2-b3)
(-x2y+4xy2)+(6x2y+7xy2)
2m2-[3m2+(8m2-7m)-4(m2+9m)]
16+8(1-a)-(1-a-a2)+3(1-a+a2-a3)
(8a2b+ab)+(a2b+ab)
(3z2-4z-5)-(4z2+2z-4)
(7a2-6a+3)+3(7-5a-2a2)
-5x2y+6x2y20t2+9.5t2
-—a2bc+—cba25a2b-0.8a2b
-—mn+—mn+16ab2+8.5ab2
22
ab+9a2b2+5+9ab2-5a2b2-1+4ab
7x3+2x2-y2-3y+7x2+6y-y2
(4a2b+8b3)-(a2b2+4b3)
(-x2y+3xy2)+(x2y+xy2)
2z2+[-5z2-(9z2+4z)-8(z2-6z)]
19+3(1-a)-(1-a-a2)-2(1-a+a2-a3)
(-7a2b-9ab)+(a2b+ab)
(5a2+2a-3)-(8a2-3a-6)
(6z2-6z+6)+2(9-5z+5z2)
-5x2y-9x2y80y2-13.5y2
—a2bc+—cba2a2b+0.7a2b
—xy+—xy-4-9x2y2-2.5x2y2
46
5ab-4a2b2+6+7ab2-6a2b2-4-2ab
3x3-4x2-8y2-9y+x2+7y+y2
(-3a2b+3b3)-(-a2b2+b3)
(-x2y-xy2)-(9x2y+9xy2)
3s2+[6s2+(9s2-8s)-9(s2+3s)]
6+2(1-a)+(1-a-a2)+4(1-a+a2-a3)
(-a2b+7ab)-(-a2b+ab)
(4s2-4s+2)-(2s2+3s+9)
(8y2-3y-3)-2(2-6y-9y2)
2x2y-9x2y-100a2+10.5a2
-—a2bc-—cba22a2b-0.2a2b
32
-—st+—st-5-9a2b2-1.5a2b2
52
2ab-5a2b2+6-8ab2+7a2b2-6-8ab
8x3-3x2+y2-y-x2+y+y2
(-8a2b+9b3)+(a2b2+5b3)
(-9x2y-xy2)-(x2y+xy2)