人教版七年级数学上册整式的加减法练习题精选12.docx
《人教版七年级数学上册整式的加减法练习题精选12.docx》由会员分享,可在线阅读,更多相关《人教版七年级数学上册整式的加减法练习题精选12.docx(43页珍藏版)》请在冰豆网上搜索。
人教版七年级数学上册整式的加减法练习题精选12
一、计算。
-x2y-3x2y70m2-10.5m2
11
—a2bc-—cba27a2b+0.3a2b
46
11
—pq+—pq-8-7x3y2-0.5x3y2
33
ab-8a2b2-8+7ab2+8a2b2-4+5ab
6x3+8x2-5y2-y+x2+y-3y2
(5a2b+5b3)-(-a2b2-5b3)
(-x2y+5xy2)+(2x2y+4xy2)
-3z2+[-4z2+(5z2-4z)+7(z2+5z)]
16-9(1-a)+(1-a-a2)-4(1-a+a2-a3)
(-8a2b+7ab)-(-8a2b-3ab)
(3t2+3t+4)-(5t2-6t+5)
(5t2-4t+4)-5(9+6t+7t2)
一、计算。
-x2y+6x2y-40y2+16.5y2
11
—a2bc-—cba2-a2b-0.9a2b
52
11
—st-—st+25x2y+7.5x2y
56
5ab-7a2b2-7+2ab2-3a2b2-8+8ab
7x3+9x2-5y2+6y+9x2+y+y2
(6a2b+2b3)-(-4a2b2+b3)
(x2y-4xy2)+(x2y+8xy2)
4c2-[9c2+(6c2+2c)+4(c2-2c)]
8+6(1-a)+(1-a-a2)+2(1-a+a2-a3)
(-a2b-9ab)-(a2b+ab)
(3y2-4y-1)-(8y2+4y-6)
(2x2+3x+3)-3(3-4x+4x2)
一、计算。
2x2y+4x2y-60m2+12.5m2
11
—a2bc+—cba2-a2b-0.6a2b
56
11
-—ab+—ab-1-6a2b2+3.5a2b2
44
9ab-3a2b2+1-7ab2-5a2b2-4-6ab
7x3+4x2+8y2+3y-x2-3y-4y2
(a2b+5b3)-(-4a2b2+2b3)
(x2y+4xy2)+(x2y-9xy2)
-9s2-[-2s2-(3s2+5s)+4(s2+7s)]
9+7(1-a)-(1-a-a2)-2(1-a+a2-a3)
(-a2b-ab)+(5a2b-ab)
(8m2-6m-6)-(7m2+3m+3)
(9b2-5b-5)-2(4+3b+6b2)
一、计算。
4x2y-9x2y-90z2-3.5z2
11
—a2bc-—cba2-a2b-0.7a2b
56
11
—xy-—xy-98a2b2-0.5a2b2
52
ab-7a2b2-4-6ab2-9a2b2-5-5ab
3x3+5x2-y2-y+3x2+y+7y2
(a2b+3b3)-(-8a2b2-3b3)
(-7x2y-9xy2)+(9x2y-xy2)
6t2-[6t2-(3t2-7t)+9(t2-2t)]
13+9(1-a)+(1-a-a2)-4(1-a+a2-a3)
(3a2b+ab)-(-a2b-8ab)
(9z2+4z+2)-(8z2-4z+5)
(7n2-6n+9)+3(8-2n+7n2)
一、计算。
4x2y-3x2y80n2-0.5n2
11
-—a2bc+—cba2-9a2b-0.3a2b
62
11
-—ab-—ab+79ab2+4.5ab2
63
ab-6a2b2+2-9ab2+6a2b2+8-6ab
3x3-6x2-2y2-3y-6x2+8y-8y2
(-3a2b+b3)+(a2b2-5b3)
(4x2y-xy2)-(x2y+3xy2)
2z2+[2z2+(6z2-3z)+2(z2+2z)]
10-6(1-a)-(1-a-a2)-4(1-a+a2-a3)
(-5a2b-5ab)-(a2b-ab)
(4y2+6y+5)+(3y2+2y-3)
(3a2-4a-3)+3(3+2a-8a2)
一、计算。
4x2y+2x2y-90z2-12.5z2
11
-—a2bc-—cba24a2b-0.9a2b
56
11
—pq+—pq+5-8ab2+7.5ab2
25
2ab+4a2b2-8-7ab2-4a2b2+8-8ab
7x3+5x2-8y2-8y-x2-y+y2
(-8a2b+b3)+(-a2b2+7b3)
(x2y+5xy2)-(9x2y+xy2)
-5c2-[-7c2+(3c2-2c)-9(c2-6c)]
5-3(1-a)-(1-a-a2)-3(1-a+a2-a3)
(a2b-ab)-(-a2b-6ab)
(3m2-4m-7)+(6m2+6m+5)
(9s2-6s-9)-3(9-6s-6s2)
一、计算。
9x2y-8x2y-50b2+2.5b2
11
—a2bc+—cba2-a2b-0.8a2b
35
11
—xy-—xy+5-7x2y2-0.5x2y2
45
9ab+6a2b2+4+4ab2-9a2b2+2+8ab
7x3+9x2+7y2-y-x2-7y-y2
(a2b-3b3)-(a2b2-9b3)
(9x2y+xy2)+(x2y+xy2)
7a2-[5a2-(5a2-8a)-7(a2+5a)]
3+6(1-a)-(1-a-a2)+2(1-a+a2-a3)
(5a2b+6ab)-(a2b-ab)
(7n2+5n+6)+(9n2+3n+8)
(8x2+4x+2)+2(9-2x-9x2)
一、计算。
x2y-2x2y-10n2+17.5n2
11
-—a2bc+—cba24a2b-0.8a2b
42
11
-—st-—st+9-3x3y2+6.5x3y2
54
2ab+3a2b2-8-7ab2+3a2b2+1-2ab
9x3+5x2-5y2+y+x2-y-7y2
(-4a2b-2b3)+(a2b2-9b3)
(8x2y-xy2)+(7x2y-9xy2)
5t2+[7t2-(3t2-4t)+4(t2+6t)]
6-4(1-a)+(1-a-a2)+3(1-a+a2-a3)
(-a2b-8ab)-(-7a2b+2ab)
(6y2-2y+9)+(4y2-5y-3)
(6y2+3y+7)+3(6+4y+4y2)
一、计算。
-5x2y-5x2y-60s2+7.5s2
11
—a2bc+—cba2a2b+0.4a2b
23
11
—st-—st-102x3y2-0.5x3y2
46
ab+3a2b2+6+5ab2-8a2b2-9+9ab
6x3+4x2-y2+7y-x2+y-6y2
(a2b+b3)+(7a2b2-6b3)
(x2y-xy2)+(6x2y+xy2)
8a2-[-6a2-(4a2+2a)-5(a2+5a)]
18+3(1-a)+(1-a-a2)-5(1-a+a2-a3)
(-9a2b-ab)+(-9a2b+8ab)
(5t2-5t-5)-(3t2-3t+7)
(3s2+3s+5)+4(6+3s+5s2)
一、计算。
-9x2y+3x2y80s2-3.5s2
11
-—a2bc+—cba2-5a2b+0.6a2b
42
11
-—pq+—pq+4-5x3y2-5.5x3y2
45
6ab-2a2b2+1+2ab2+5a2b2-5-7ab
6x3+5x2+2y2-7y-x2-y+y2
(2a2b+5b3)+(-a2b2+b3)
(x2y+6xy2)-(x2y+xy2)
-8a2+[7a2+(6a2-7a)+4(a2+8a)]
20-8(1-a)-(1-a-a2)+2(1-a+a2-a3)
(a2b-ab)+(3a2b+9ab)
(8t2+5t+5)+(6t2+2t+2)
(6x2-2x+9)-5(7+6x-6x2)
一、计算。
x2y-3x2y-40y2-5.5y2
11
—a2bc-—cba2a2b+0.5a2b
35
11
-—ab+—ab-6-9x2y2-7.5x2y2
25
ab+2a2b2+4+4ab2-9a2b2-7+2ab
3x3-9x2-6y2-y+x2+y-5y2
(5a2b-5b3)+(2a2b2-b3)
(2x2y+5xy2)+(9x2y+xy2)
-2a2-[-9a2-(5a2-4a)-3(a2+8a)]
4-3(1-a)+(1-a-a2)+5(1-a+a2-a3)
(-a2b-5ab)-(-6a2b-ab)
(7s2+4s+7)-(3s2-6s+3)
(6b2-4b+2)+4(9+6b+7b2)
一、计算。
9x2y-7x2y50t2+8.5t2
11
-—a2bc-—cba2-6a2b+0.6a2b
65
11
—xy-—xy+5-6x2y-8.5x2y
66
ab-8a2b2+3-5ab2-6a2b2+7+6ab
5x3-4x2+7y2+9y+8x2+4y+7y2
(a2b+9b3)-(2a2b2-b3)
(x2y-xy2)-(3x2y-xy2)
-3a2-[-7a2+(2a2+4a)-8(a2+6a)]
7+2(1-a)-(1-a-a2)+4(1-a+a2-a3)
(6a2b-ab)+(a2b-ab)
(4z2+6z-4)+(9z2+6z-1)
(7b2-2b+3)+5(9-3b+2b2)
一、计算。
x2y-4x2y-40z2-6.5z2
11
-—a2bc-—cba2-a2b+0.8a2b
66
11
—pq-—pq+8-9ab2-2.5ab2
56
5ab+5a2b2-9+6ab2+2a2b2-3+9ab
6x3-4x2+9y2+5y-9x2+y-y2
(a2b+b3)+(-3a2b2+b3)
(x2y-xy2)+(x2y+xy2)
2m2-[8m2-(4m2+6m)+5(m2-2m)]
6-5(1-a)+(1-a-a2)-2(1-a+a2-a3)
(a2b+7ab)-(-4a2b-ab)
(7b2-4b+9)-(3b2-4b-6)
(7t2+3t-6)-4(6+6t+7t2)
一、计算。
-8x2y+9x2y-10x2+10.5x2
11
—a2bc+—cba2a2b-0.3a2b
32
11
-—st-—st+46a3b+2.5a3