人教版七年级数学上册整式的加减法专项练习题精选1Word文档格式.docx
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(7s2+6s-5)+2(7+2s+6s2)
3x2y-5x2y-20x2-9.5x2
-—a2bc+—cba2-8a2b-0.9a2b
23
-—pq+—pq+52ab2+5.5ab2
43
5ab-7a2b2+4-5ab2-6a2b2+6-5ab
6x3+2x2+y2-9y+8x2-y+4y2
(8a2b+5b3)-(a2b2-b3)
(-x2y+2xy2)-(7x2y-8xy2)
-2z2-[8z2+(4z2-4z)+6(z2-5z)]
4+7(1-a)+(1-a-a2)+4(1-a+a2-a3)
(-7a2b-ab)-(a2b-ab)
(2m2-4m+3)-(6m2-5m+4)
(9b2-6b-9)+4(8-5b-6b2)
-8x2y+6x2y20n2-4.5n2
—a2bc+—cba2-4a2b+0.2a2b
46
-—st+—st+36ab2+9.5ab2
9ab+7a2b2-9+2ab2-9a2b2-1+8ab
8x3+5x2+8y2+y+6x2+3y+6y2
(3a2b+b3)+(a2b2+b3)
(-x2y-3xy2)-(2x2y-xy2)
-3n2+[8n2-(4n2-7n)-9(n2-8n)]
18-3(1-a)-(1-a-a2)-5(1-a+a2-a3)
(-a2b+ab)+(-a2b-ab)
(5b2+4b-2)+(3b2-6b-1)
(9a2-3a-2)+3(7-4a+9a2)
-x2y+3x2y-50y2+10.5y2
—a2bc+—cba2a2b+0.4a2b
54
—ab+—ab+1-8x2y2-5.5x2y2
63
8ab-2a2b2+8-2ab2-2a2b2-9+9ab
6x3+9x2-3y2+y-7x2-2y+y2
(a2b+2b3)+(a2b2-4b3)
(-8x2y+xy2)+(9x2y+xy2)
4c2-[-9c2-(6c2+4c)+5(c2-6c)]
4-3(1-a)-(1-a-a2)+4(1-a+a2-a3)
(-a2b-ab)+(-a2b-ab)
(3m2+5m-1)-(7m2+6m+2)
(7s2+4s+8)-4(2+5s-8s2)
2x2y-4x2y70t2-9.5t2
—a2bc-—cba28a2b-0.9a2b
66
-—xy+—xy+5-2a3b+9.5a3b
ab+7a2b2+2+9ab2-9a2b2+8-9ab
7x3-9x2-y2-y-x2+y+y2
(-a2b+8b3)-(8a2b2+6b3)
(-4x2y+xy2)-(8x2y+xy2)
-9x2+[-4x2+(5x2+5x)+4(x2+7x)]
19+8(1-a)-(1-a-a2)+2(1-a+a2-a3)
(a2b-9ab)+(2a2b-7ab)
(5x2+6x+1)-(4x2+4x-5)
(4m2+3m-2)-3(8-4m-5m2)
3x2y+8x2y90t2+0.5t2
—a2bc-—cba29a2b+0.9a2b
33
-—mn+—mn-7-10a3b+2.5a3b
8ab+5a2b2-9-9ab2-8a2b2+6+5ab
3x3-9x2+9y2+5y+x2+8y-y2
(9a2b+b3)-(a2b2+8b3)
(-x2y-5xy2)+(x2y-xy2)
-6n2+[6n2-(4n2+2n)+2(n2-4n)]
2-5(1-a)+(1-a-a2)+3(1-a+a2-a3)
(-a2b-8ab)-(a2b+ab)
(2c2+6c-7)-(8c2+6c+4)
(5b2+3b+8)+2(5-5b+4b2)
-x2y-3x2y10t2-15.5t2
—a2bc+—cba2-a2b-0.2a2b
42
-—ab-—ab-6-7a2b2-0.5a2b2
4ab-8a2b2-1+3ab2-5a2b2+4+5ab
3x3-4x2+6y2+4y-9x2+7y-9y2
(-a2b-9b3)+(7a2b2+b3)
(-9x2y+9xy2)+(x2y+3xy2)
-4z2+[7z2-(3z2+6z)-5(z2-8z)]
8-7(1-a)-(1-a-a2)-3(1-a+a2-a3)
(9a2b-ab)+(a2b+ab)
(6m2+3m-9)-(4m2+2m+7)
(7b2-5b+2)+4(9-2b+2b2)
x2y+4x2y-20x2+3.5x2
—a2bc+—cba2a2b-0.6a2b
—xy+—xy-3-9a3b-3.5a3b
2ab-6a2b2+5-2ab2+9a2b2-9-9ab
3x3+7x2-6y2+2y-x2-y+8y2
(3a2b+b3)+(2a2b2+b3)
(-x2y-9xy2)-(2x2y-xy2)
5t2-[-5t2+(2t2+5t)-9(t2-5t)]
4-4(1-a)+(1-a-a2)-5(1-a+a2-a3)
(a2b+7ab)+(-2a2b-ab)
(5x2-4x-3)+(6x2+6x+9)
(5s2-5s+2)+3(7+5s-5s2)
-7x2y-3x2y-10z2+11.5z2
—a2bc+—cba2-a2b-0.8a2b
—mn-—mn-47a2b2-4.5a2b2
ab-5a2b2-1+9ab2-7a2b2-9-6ab
4x3-9x2+7y2-y+x2-y-2y2
(-a2b+8b3)+(-4a2b2+b3)
(-6x2y+xy2)+(5x2y+xy2)
6y2+[-4y2-(4y2-6y)-8(y2-4y)]
14+2(1-a)+(1-a-a2)+5(1-a+a2-a3)
(-a2b-8ab)+(-7a2b-9ab)
(2x2-5x-6)+(8x2+4x+2)
(3x2+6x+8)-3(4+2x-7x2)
9x2y-5x2y80s2+18.5s2
-—a2bc+—cba2a2b-0.9a2b
-—ab+—ab+10-5ab2-2.5ab2
25
7ab-5a2b2-6-6ab2-8a2b2+7-9ab
7x3-6x2-9y2-7y-4x2+2y+4y2
(7a2b-b3)-(9a2b2+3b3)
(5x2y+6xy2)-(9x2y+xy2)
-2n2+[-2n2-(9n2+6n)+8(n2+9n)]
20+3(1-a)+(1-a-a2)+5(1-a+a2-a3)
(a2b+ab)-(9a2b-ab)
(2n2-2n+3)+(6n2+6n-9)
(9n2+5n+8)-3(8+6n-2n2)
-x2y+5x2y-90b2-13.5b2
—a2bc+—cba2a2b+0.7a2b
—pq+—pq+1-10a3b+7.5a3b
44
ab+2a2b2-4-4ab2+5a2b2+8+8ab
6x3-2x2-4y2-5y+x2+5y+y2
(-7a2b+4b3)+(a2b2+4b3)
(-x2y+xy2)+(2x2y+4xy2)
-4z2-[5z2+(3z2+9z)-3(z2-6z)]
19-8(1-a)-(1-a-a2)-5(1-a+a2-a3)
(-a2b+6ab)+(-9a2b-ab)
(9y2-2y+9)+(9y2+2y-7)
(4s2-4s-3)+3(7+3s+7s2)
-5x2y-4x2y50a2+8.5a2
—a2bc-—cba2a2b-0.7a2b
-—pq-—pq-8-10x3y2+2.5x3y2
36
ab-2a2b2+8+3ab2-2a2b2-4-9ab
3x3-6x2+3y2+y-3x2-3y-4y2
(-8a2b+2b3)-(5a2b2+b3)
(-2x2y-xy2)-(7x2y-9xy2)
-9b2-[9b2-(6b2+3b)-5(b2+9b)]
19-2(1-a)+(1-a-a2)-2(1-a+a2-a3)
(a2b-ab)+(9a2b-ab)
(9c2+5c-8)+(3c2-4c-5)
(6c2-2c-3)+3(9+6c+2c2)
-6x2y-5x2y-100a2+13.5a2
-—mn+—mn+77ab2-7.5ab2
22
ab+2a2b2-3+3ab2-7a2b2-8+7ab
4x3-4x2-6y2+y-9x2-2y+2y2
(-2a2b+b3)-(-7a2b2+4b3)
(-8x2y+xy2)+(7x2y-xy2)
-4m2+[-2m2-(9m2+8m)+5(m2-5m)]
16+3(1-a)-(1-a-a2)-5(1-a+a2-a3)
(-3a2b+3ab)+(-a2b+3ab)
(8y2-3y+4)-(9y2+2y-2)
(7m2+2m-9)-2(2-2m+2m2)
x2y-3x2y30y2+6.5y2
—pq-—pq-5-4x