人教版七年级数学上册整式的加减法练习题精选10.docx
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人教版七年级数学上册整式的加减法练习题精选10
一、计算。
x2y+9x2y-10z2+13.5z2
11
—a2bc-—cba2a2b-0.4a2b
36
11
—mn+—mn-5-3a2b2-4.5a2b2
25
ab+3a2b2+5+8ab2-7a2b2+6+9ab
6x3+5x2-y2+2y-x2-y+y2
(a2b-b3)-(-a2b2-5b3)
(9x2y+9xy2)+(x2y+xy2)
3n2-[2n2+(2n2+3n)-9(n2-8n)]
8-5(1-a)-(1-a-a2)+3(1-a+a2-a3)
(3a2b+5ab)-(a2b-ab)
(5z2+5z+6)-(6z2+6z+6)
(6s2+4s+9)-2(8+3s-7s2)
一、计算。
x2y-7x2y50a2+3.5a2
11
-—a2bc+—cba2-a2b-0.4a2b
54
11
-—mn-—mn-9-6a3b-2.5a3b
66
3ab+8a2b2-4-9ab2+2a2b2-8+4ab
8x3+4x2-9y2+5y-2x2+y+5y2
(a2b-7b3)+(a2b2-9b3)
(3x2y+xy2)-(x2y+xy2)
5b2+[7b2-(8b2-4b)-4(b2+9b)]
4-4(1-a)+(1-a-a2)+2(1-a+a2-a3)
(a2b+ab)+(-a2b-8ab)
(2y2+4y+9)-(9y2-5y+5)
(3z2-4z+8)+4(6-2z+7z2)
一、计算。
-x2y-2x2y-100t2-17.5t2
11
—a2bc+—cba23a2b-0.9a2b
32
11
-—mn+—mn+98ab2-4.5ab2
36
5ab-9a2b2-5-5ab2-6a2b2-9-5ab
6x3-6x2+y2+y+x2-9y-6y2
(-a2b+3b3)+(-a2b2-b3)
(8x2y-xy2)-(9x2y-3xy2)
-9b2+[3b2-(4b2-6b)+8(b2-9b)]
20-8(1-a)+(1-a-a2)+2(1-a+a2-a3)
(-a2b-3ab)+(-3a2b-7ab)
(3c2+4c-5)-(2c2-6c-8)
(7b2+5b-7)+2(7+5b-8b2)
一、计算。
5x2y+9x2y-50b2-18.5b2
11
—a2bc-—cba2-a2b+0.6a2b
52
11
-—ab+—ab+7-2x2y2-7.5x2y2
22
9ab-2a2b2-4+2ab2-2a2b2-1+3ab
2x3+9x2+y2-3y-x2-y-4y2
(-3a2b-9b3)+(a2b2+b3)
(5x2y+9xy2)-(x2y+2xy2)
-8c2+[6c2+(6c2+3c)-9(c2-4c)]
9+9(1-a)-(1-a-a2)-5(1-a+a2-a3)
(4a2b+8ab)-(a2b-3ab)
(6x2+6x+5)+(8x2-3x+1)
(6y2+4y-7)+2(3+4y+6y2)
一、计算。
x2y+6x2y-80s2-18.5s2
11
—a2bc-—cba2a2b-0.6a2b
44
11
—ab+—ab-67ab2-1.5ab2
34
4ab+7a2b2-4+9ab2+6a2b2+6+3ab
8x3+5x2-y2+y+3x2+9y+y2
(-5a2b-7b3)+(-3a2b2-8b3)
(-x2y-xy2)-(9x2y+xy2)
6t2+[3t2+(2t2-9t)-6(t2-2t)]
7-3(1-a)+(1-a-a2)+3(1-a+a2-a3)
(-a2b+ab)-(a2b-9ab)
(6a2+5a-6)-(9a2-2a+6)
(6y2-5y+4)-3(3+5y+9y2)
一、计算。
x2y-3x2y60c2+17.5c2
11
-—a2bc+—cba25a2b-0.4a2b
26
11
—st+—st+33x3y2-7.5x3y2
35
6ab-2a2b2+2+9ab2-6a2b2-6-7ab
7x3+6x2+y2+8y-7x2-3y-7y2
(-9a2b-2b3)+(-7a2b2-8b3)
(-4x2y-8xy2)-(7x2y-9xy2)
8z2-[-8z2-(9z2+7z)+6(z2-8z)]
15-4(1-a)-(1-a-a2)+3(1-a+a2-a3)
(-a2b+ab)-(a2b-8ab)
(3s2-4s+7)-(2s2-2s+9)
(6n2-5n+4)-5(9-2n+7n2)
一、计算。
x2y-8x2y-20z2+6.5z2
11
—a2bc+—cba2a2b-0.3a2b
62
11
—mn+—mn-32a2b2-9.5a2b2
65
6ab+5a2b2+1+4ab2-9a2b2-4-8ab
4x3-4x2+5y2+y-x2+9y+y2
(-7a2b+8b3)-(a2b2+b3)
(-8x2y-xy2)-(x2y+5xy2)
3n2-[-4n2+(6n2+4n)-8(n2+6n)]
19-7(1-a)+(1-a-a2)+2(1-a+a2-a3)
(a2b-ab)+(a2b+ab)
(6c2-6c-8)+(9c2+2c-1)
(5t2+4t-7)-2(4-3t+8t2)
一、计算。
-x2y-4x2y-70x2+17.5x2
11
-—a2bc+—cba2-a2b-0.3a2b
63
11
-—xy-—xy+66a2b2+4.5a2b2
46
8ab+5a2b2+9-8ab2-5a2b2+1-9ab
8x3+2x2-y2-2y+x2-3y-y2
(9a2b+5b3)+(6a2b2-7b3)
(x2y+xy2)-(x2y-xy2)
3t2+[-6t2+(6t2+7t)+6(t2+2t)]
7+2(1-a)-(1-a-a2)-4(1-a+a2-a3)
(a2b+ab)+(5a2b-9ab)
(3c2+5c+4)+(9c2-4c-4)
(9t2-5t+3)-2(3+3t-8t2)
一、计算。
x2y-5x2y30x2+10.5x2
11
—a2bc+—cba22a2b-0.3a2b
53
11
—xy+—xy+99a3b+4.5a3b
25
ab-2a2b2+6-7ab2+3a2b2-4-7ab
8x3-7x2+6y2+y-x2-2y+y2
(9a2b-4b3)-(5a2b2-b3)
(-2x2y+xy2)+(x2y-xy2)
2s2+[4s2-(4s2-7s)+2(s2+6s)]
19+3(1-a)-(1-a-a2)+5(1-a+a2-a3)
(-a2b+ab)-(-a2b-ab)
(3a2-2a-7)-(7a2-3a-6)
(3t2-4t+2)+3(6+3t+3t2)
一、计算。
6x2y-4x2y10x2-0.5x2
11
-—a2bc+—cba2a2b+0.4a2b
55
11
-—mn-—mn+1-9ab2-8.5ab2
34
ab+2a2b2-9+8ab2+4a2b2-8-8ab
2x3+5x2-3y2+y+6x2-y+y2
(-6a2b-9b3)-(2a2b2+5b3)
(8x2y+5xy2)+(3x2y+xy2)
9m2+[-3m2+(5m2+7m)-3(m2+5m)]
7+6(1-a)-(1-a-a2)+4(1-a+a2-a3)
(-a2b+9ab)-(-a2b+ab)
(9t2+2t-2)+(7t2+2t+2)
(8c2+3c+3)+4(6+4c+8c2)
一、计算。
-x2y-6x2y-10a2-8.5a2
11
-—a2bc-—cba2a2b-0.7a2b
56
11
-—st+—st+109a3b-1.5a3b
43
ab-3a2b2+2-9ab2-7a2b2+1-3ab
4x3-5x2+8y2-6y+x2-4y+y2
(a2b-8b3)+(-2a2b2-b3)
(x2y+7xy2)+(x2y-3xy2)
-2t2+[4t2+(6t2-7t)-7(t2-9t)]
8-2(1-a)+(1-a-a2)-3(1-a+a2-a3)
(4a2b-5ab)-(-3a2b+7ab)
(5n2+6n-9)-(2n2+5n-5)
(9t2+5t-4)-5(3+5t+4t2)
一、计算。
x2y-5x2y-90m2-9.5m2
11
-—a2bc+—cba2-a2b+0.7a2b
54
11
—pq+—pq+1-2x2y-1.5x2y
55
4ab-3a2b2-3-3ab2+4a2b2+8-6ab
3x3-8x2+6y2-y+x2+3y+y2
(-2a2b+7b3)-(9a2b2-b3)
(-x2y-7xy2)-(6x2y+xy2)
3m2-[-8m2-(3m2-7m)+4(m2-6m)]
13-6(1-a)-(1-a-a2)-4(1-a+a2-a3)
(9a2b-ab)-(-8a2b+ab)
(7a2+2a-6)+(2a2+5a+1)
(3c2-5c+3)-3(4+6c+7c2)
一、计算。
2x2y-7x2y-50m2+9.5m2
11
-—a2bc+—cba27a2b-0.5a2b
25
11
-—xy+—xy-7-8x2y2-1.5x2y2
62
4ab-3a2b2+4-4ab2+5a2b2+6-3ab
4x3-9x2-y2+3y+x2-y-y2
(-2a2b-3b3)+(2a2b2-b3)
(-7x2y-xy2)-(x2y-xy2)
-6c2-[8c2-(4c2+5c)-6(c2-6c)]
10+9(1-a)-(1-a-a2)-4(1-a+a2-a3)
(a2b-ab)-(3a2b+ab)
(4x2-6x+7)-(6x2+3x-8)
(3m2-2m+1)-3(9-4m+7m2)
一、计算。
-4x2y-4x2y-70s2-8.5s2
11
—a2bc+—cba2-9a2b+0.8a2b
42
11
—xy-—xy-3-2x2y2-9.5x2y2
44