人教版七年级数学上册整式的加减法练习题精选11.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11
一、计算。
6x2y-7x2y70x2-2.5x2
11
—a2bc-—cba2a2b-0.2a2b
66
11
—mn+—mn-73x3y2-5.5x3y2
56
2ab+2a2b2-3+3ab2+2a2b2+2-3ab
5x3-7x2+4y2-4y+x2+3y-9y2
(9a2b+b3)-(-a2b2-b3)
(-x2y+xy2)-(x2y+5xy2)
7t2+[-8t2-(2t2+9t)+2(t2+2t)]
16+8(1-a)+(1-a-a2)-2(1-a+a2-a3)
(-9a2b+ab)-(6a2b-9ab)
(4y2-4y+9)-(2y2+5y-6)
(2x2+5x-4)-4(2+3x-2x2)
一、计算。
-x2y+2x2y10n2-8.5n2
11
—a2bc-—cba25a2b-0.6a2b
53
11
—xy-—xy+94x2y+4.5x2y
33
ab-5a2b2-8+2ab2+4a2b2-4-7ab
3x3+5x2-9y2+y-8x2-y-3y2
(8a2b-b3)+(-a2b2+5b3)
(4x2y+xy2)-(7x2y-6xy2)
-5c2-[-8c2-(2c2+8c)+9(c2+6c)]
20-7(1-a)+(1-a-a2)+4(1-a+a2-a3)
(6a2b-4ab)-(3a2b-9ab)
(7y2+6y+9)-(9y2+4y-1)
(4m2-6m-7)+5(3+5m-5m2)
一、计算。
-7x2y+5x2y-10a2-15.5a2
11
-—a2bc-—cba24a2b+0.3a2b
45
11
—xy-—xy-4-7x2y-4.5x2y
43
ab-9a2b2-4+5ab2-9a2b2+6+5ab
9x3-2x2-y2+6y+x2+y-3y2
(a2b-2b3)+(-a2b2+5b3)
(-8x2y+xy2)+(5x2y+8xy2)
3s2+[-8s2+(7s2+5s)+4(s2+5s)]
15+5(1-a)+(1-a-a2)-5(1-a+a2-a3)
(5a2b-ab)-(-8a2b-9ab)
(2t2+5t+5)-(8t2+3t+9)
(3s2+2s-1)+3(6-4s+5s2)
一、计算。
-x2y-6x2y80z2+18.5z2
11
-—a2bc-—cba22a2b-0.2a2b
52
11
-—st-—st+42x2y+7.5x2y
64
8ab+8a2b2+3-9ab2-8a2b2-5-4ab
9x3-9x2+2y2+4y+x2+y-y2
(-a2b+b3)+(2a2b2+b3)
(-x2y-xy2)-(5x2y-xy2)
6m2-[-3m2-(5m2+3m)-2(m2+7m)]
11-5(1-a)-(1-a-a2)+2(1-a+a2-a3)
(a2b+3ab)+(a2b-ab)
(9z2-2z-6)+(8z2-4z+3)
(9b2-4b+2)-4(3+4b-3b2)
一、计算。
2x2y-5x2y40c2-1.5c2
11
-—a2bc-—cba2-6a2b-0.7a2b
33
11
—st+—st+9-9x3y2-9.5x3y2
46
7ab-3a2b2-4-7ab2-6a2b2+1-8ab
7x3+8x2+2y2+8y+9x2-y+y2
(-5a2b+9b3)-(a2b2-b3)
(x2y-xy2)-(x2y-4xy2)
2b2+[-7b2+(2b2+3b)-8(b2-6b)]
16-4(1-a)-(1-a-a2)+5(1-a+a2-a3)
(-a2b-7ab)+(4a2b-2ab)
(2z2+3z+5)+(4z2+6z-8)
(9b2-5b-3)+4(2+4b-9b2)
一、计算。
8x2y-2x2y-90m2+2.5m2
11
-—a2bc-—cba2-4a2b+0.3a2b
52
11
-—pq-—pq-89a3b-4.5a3b
66
ab-8a2b2+1+4ab2+9a2b2+2+4ab
9x3-5x2-9y2+y+x2-3y+4y2
(-a2b+b3)-(-5a2b2+2b3)
(x2y+xy2)+(x2y+xy2)
4a2+[-6a2+(2a2+7a)+4(a2+6a)]
11+9(1-a)-(1-a-a2)+3(1-a+a2-a3)
(9a2b+ab)-(-7a2b-ab)
(6t2-2t+4)-(2t2-4t-2)
(8c2-6c+2)+4(8+5c+4c2)
一、计算。
8x2y+6x2y10x2+19.5x2
11
-—a2bc-—cba26a2b-0.7a2b
65
11
—ab-—ab-58x2y+2.5x2y
64
ab+6a2b2-4+7ab2+9a2b2-3-4ab
9x3-4x2+y2-y-2x2+7y+6y2
(-6a2b-4b3)-(-a2b2+b3)
(x2y+7xy2)+(7x2y-xy2)
8c2+[-8c2-(5c2-8c)+5(c2+7c)]
7-7(1-a)+(1-a-a2)-5(1-a+a2-a3)
(-a2b-4ab)+(-7a2b-3ab)
(8b2-4b+8)+(9b2+5b-8)
(7m2+2m+9)-4(8+4m+6m2)
一、计算。
-x2y+9x2y60m2-12.5m2
11
-—a2bc-—cba2-a2b-0.6a2b
32
11
-—ab-—ab+9-10a2b2+3.5a2b2
22
ab+8a2b2-1-4ab2+5a2b2+8+8ab
3x3+2x2-2y2-4y-x2+y-9y2
(6a2b-6b3)-(a2b2+b3)
(-5x2y-xy2)-(x2y-7xy2)
-5x2-[-4x2+(3x2+5x)-3(x2-3x)]
14+3(1-a)-(1-a-a2)-3(1-a+a2-a3)
(-a2b+ab)+(a2b+ab)
(4m2+6m-9)-(9m2+4m+7)
(8m2-6m-6)-2(3-5m+6m2)
一、计算。
-x2y+7x2y30a2+12.5a2
11
-—a2bc-—cba2-6a2b-0.8a2b
26
11
—xy+—xy+5-2ab2+0.5ab2
42
ab-3a2b2-4-5ab2+6a2b2-5-3ab
4x3-6x2+7y2-y-x2+y-9y2
(-a2b+6b3)+(a2b2+3b3)
(-2x2y+2xy2)-(x2y+xy2)
5z2-[-6z2+(7z2+3z)+7(z2+4z)]
18-3(1-a)+(1-a-a2)-3(1-a+a2-a3)
(a2b-ab)-(a2b+6ab)
(4z2+6z-3)-(4z2+4z+2)
(8c2+4c+7)+3(7-2c+2c2)
一、计算。
-5x2y-9x2y70b2-19.5b2
11
—a2bc-—cba2-5a2b+0.6a2b
66
11
—mn+—mn-4-8x2y2+4.5x2y2
26
ab-3a2b2-4+2ab2+2a2b2+1+2ab
9x3-8x2-y2-y+x2-2y-y2
(-a2b-2b3)+(a2b2+9b3)
(x2y-7xy2)-(3x2y-3xy2)
4t2-[8t2+(2t2+8t)-2(t2+4t)]
4-3(1-a)+(1-a-a2)-3(1-a+a2-a3)
(a2b+ab)+(a2b+ab)
(4t2-5t+4)-(7t2+6t+5)
(8y2+6y-7)+4(6+5y-5y2)
一、计算。
-x2y+4x2y-70x2-19.5x2
11
—a2bc-—cba2-7a2b+0.7a2b
56
11
-—xy-—xy+4-4x3y2-6.5x3y2
52
ab+6a2b2+4-3ab2+4a2b2-8+5ab
9x3-9x2+9y2-y-x2+y-8y2
(7a2b-7b3)-(-a2b2+b3)
(x2y-5xy2)+(2x2y+xy2)
-3z2-[4z2-(9z2-4z)+2(z2-2z)]
11+5(1-a)+(1-a-a2)+2(1-a+a2-a3)
(-6a2b-8ab)+(2a2b-3ab)
(3b2-5b-1)+(8b2+4b-2)
(2y2-4y-6)+2(8+6y-7y2)
一、计算。
5x2y+6x2y-70m2+16.5m2
11
—a2bc-—cba2a2b+0.6a2b
63
11
—pq+—pq-59ab2-2.5ab2
36
6ab+8a2b2-2-3ab2-3a2b2+8-7ab
3x3+3x2-8y2+y-x2-9y+7y2
(-3a2b+3b3)+(-6a2b2-b3)
(6x2y-3xy2)-(x2y-5xy2)
2a2+[-4a2-(8a2+6a)+7(a2+5a)]
3-8(1-a)+(1-a-a2)-5(1-a+a2-a3)
(6a2b+3ab)-(a2b-ab)
(9a2+6a+3)+(9a2+2a+3)
(6b2+4b+4)-2(2-6b+4b2)
一、计算。
-6x2y+9x2y70a2-17.5a2
11
-—a2bc-—cba24a2b+0.9a2b
44
11
—xy+—xy-106a2b2+5.5a2b2
56
8ab+4a2b2+5-3ab2-5a2b2-5-5ab
8x3-9x2+9y2+y-5x2+y-y2
(-3a2b-b3)-(-a2b2+6b3)
(-7x2y-7xy2)+(9x2y-xy2)
-7c2+[8c2+(4c2+7c)-8(c2-3c)]
14+9(1-a)-(1-a-a2)+4(1-a+a2-a3)
(-a2b+5ab)+(-5a2b-ab)
(6b2-6b+5)+(9b2-3b+2)
(7m2-2m+9)+2(8-6m-2m2)
一、计算。
3x2y+2x2y-90t2-13.5t2
11
-—a2bc-—cba25a2b+0.6a2b
46
11
—pq-—pq+82a3b-