人教版七年级数学上册整式的加减法练习题精选4.docx

1、人教版七年级数学上册整式的加减法练习题精选4一、计算。 x2y5x2y 70z217.5z2 1 1 a2bccba2 a2b0.9a2b 2 3 1 1 abab6 9a3b4.5a3b 5 5 ab4a2b236ab25a2b264ab 6x35x2y2y5x28yy2 (a2b2b3)(5a2b27b3) (x2y8xy2)(9x2yxy2) 7a26a2(6a27a)7(a28a) 26(1a)(1aa2)3(1aa2a3) (3a2b7ab)(8a2b6ab) (4a25a2)(7a23a1) (8t22t7)5(64t3t2) 一、计算。 x2y7x2y 50x29.5x2 1 1

2、 a2bccba2 6a2b0.9a2b 5 4 1 1 xyxy7 2ab23.5ab2 3 3 ab7a2b286ab26a2b214ab 3x38x26y25yx26y8y2 (6a2b7b3)(a2b2b3) (4x2yxy2)(x2y6xy2) 4y24y2(8y29y)3(y22y) 107(1a)(1aa2)3(1aa2a3) (a2bab)(a2b6ab) (9m25m2)(7m23m7) (2c24c3)4(36c5c2) 一、计算。 x2y4x2y 40t213.5t2 1 1 a2bccba2 2a2b0.6a2b 4 5 1 1 pqpq7 4a3b7.5a3b 3 2

3、 ab9a2b266ab28a2b244ab 8x36x26y23yx23y5y2 (2a2b7b3)(7a2b2b3) (3x2yxy2)(5x2yxy2) 3n22n2(5n27n)6(n29n) 123(1a)(1aa2)2(1aa2a3) (a2b7ab)(3a2bab) (6t24t8)(4t24t9) (6s22s2)2(75s5s2) 一、计算。 x2y5x2y 100m213.5m2 1 1 a2bccba2 a2b0.6a2b 6 2 1 1 xyxy1 7a3b4.5a3b 4 4 6ab3a2b212ab29a2b239ab 3x33x2y29yx23yy2 (2a2bb

4、3)(a2b2b3) (5x2y5xy2)(3x2yxy2) 9b27b2(7b25b)2(b24b) 163(1a)(1aa2)3(1aa2a3) (a2b8ab)(a2bab) (3n23n3)(8n26n1) (6y24y2)3(72y2y2) 一、计算。 8x2y3x2y 100c216.5c2 1 1 a2bccba2 7a2b0.4a2b 2 3 1 1 mnmn5 10a2b29.5a2b2 2 4 4ab9a2b228ab25a2b229ab 3x33x2y27y8x26yy2 (5a2bb3)(4a2b23b3) (6x2y2xy2)(8x2yxy2) 6y26y2(8y27

5、y)9(y23y) 143(1a)(1aa2)5(1aa2a3) (2a2bab)(6a2bab) (7n25n2)(7n25n5) (4z25z9)3(35z4z2) 一、计算。 6x2y2x2y 50z214.5z2 1 1 a2bccba2 8a2b0.9a2b 2 4 1 1 xyxy8 5ab24.5ab2 2 2 ab3a2b233ab22a2b258ab 9x39x2y23yx23y5y2 (3a2bb3)(a2b2b3) (x2y8xy2)(x2yxy2) 5s29s2(4s22s)2(s23s) 108(1a)(1aa2)2(1aa2a3) (a2bab)(a2b9ab) (

6、7t26t5)(9t23t6) (8z22z2)5(72z8z2) 一、计算。 x2y9x2y 70x212.5x2 1 1 a2bccba2 9a2b0.7a2b 4 2 1 1 abab4 10a3b2.5a3b 5 5 8ab2a2b267ab22a2b267ab 7x37x22y2y3x24y6y2 (9a2b9b3)(4a2b2b3) (x2y6xy2)(x2y6xy2) 2b23b2(8b23b)7(b22b) 173(1a)(1aa2)5(1aa2a3) (a2b3ab)(6a2b7ab) (5c24c2)(3c24c3) (5m24m8)4(22m8m2) 一、计算。 x2y6

7、x2y 20n29.5n2 1 1 a2bccba2 a2b0.3a2b 2 4 1 1 abab6 5x2y24.5x2y2 2 6 7ab4a2b297ab24a2b263ab 4x37x22y22yx22y6y2 (a2bb3)(a2b2b3) (8x2yxy2)(7x2yxy2) 5s25s2(9s26s)8(s27s) 197(1a)(1aa2)3(1aa2a3) (9a2bab)(3a2b3ab) (3s24s7)(3s24s7) (2s22s5)3(82s8s2) 一、计算。 x2y9x2y 10z25.5z2 1 1 a2bccba2 a2b0.4a2b 2 4 1 1 pqp

8、q2 2ab27.5ab2 5 2 ab9a2b283ab25a2b294ab 5x34x2y2y6x28yy2 (7a2bb3)(3a2b22b3) (9x2y6xy2)(3x2yxy2) 9z25z2(4z28z)2(z25z) 58(1a)(1aa2)2(1aa2a3) (a2bab)(3a2bab) (9c24c6)(9c26c6) (2a23a8)3(86a5a2) 一、计算。 x2y8x2y 10y26.5y2 1 1 a2bccba2 8a2b0.3a2b 3 6 1 1 abab3 9a2b24.5a2b2 6 3 5ab6a2b237ab25a2b294ab 5x35x28y

9、22y8x2yy2 (a2bb3)(8a2b2b3) (5x2yxy2)(x2yxy2) 4b26b2(8b27b)9(b25b) 166(1a)(1aa2)5(1aa2a3) (a2b8ab)(a2bab) (9z23z8)(3z23z4) (2y23y9)5(35y4y2) 一、计算。 8x2y7x2y 40t21.5t2 1 1 a2bccba2 8a2b0.3a2b 2 3 1 1 pqpq4 9ab27.5ab2 3 5 3ab9a2b233ab28a2b212ab 7x33x23y2yx23yy2 (a2b5b3)(a2b26b3) (4x2yxy2)(x2yxy2) 9t22t2

10、(9t26t)4(t23t) 55(1a)(1aa2)2(1aa2a3) (3a2bab)(a2bab) (8x26x3)(5x23x9) (9y25y8)5(72y3y2) 一、计算。 9x2y4x2y 100z218.5z2 1 1 a2bccba2 a2b0.4a2b 5 3 1 1 pqpq10 7a3b8.5a3b 4 3 ab7a2b262ab25a2b249ab 4x33x2y2y2x2y6y2 (a2b8b3)(a2b2b3) (4x2y4xy2)(7x2yxy2) 8y29y2(6y29y)7(y29y) 79(1a)(1aa2)5(1aa2a3) (3a2bab)(a2b8

11、ab) (5m23m1)(8m25m8) (5t22t4)3(25t4t2) 一、计算。 3x2y2x2y 10z29.5z2 1 1 a2bccba2 a2b0.4a2b 5 3 1 1 stst7 4a3b7.5a3b 2 6 2ab5a2b275ab27a2b268ab 9x36x24y2yx22y3y2 (8a2b2b3)(2a2b23b3) (2x2yxy2)(5x2yxy2) 8z25z2(8z28z)8(z24z) 22(1a)(1aa2)5(1aa2a3) (a2b5ab)(a2b4ab) (8m24m6)(6m24m7) (5m26m6)4(72m5m2) 一、计算。 9x2y7x2y 50z210.5z2 1 1 a2bccba2 2a2b0.2a2b 2 6 1 1 stst8 2x3y29.5x3y2 2