1、人教版七年级数学上册整式的加减法练习题精选6一、计算。 9x2y7x2y 10t213.5t2 1 1 a2bccba2 a2b0.4a2b 2 3 1 1 xyxy3 5a2b27.5a2b2 4 6 8ab9a2b298ab23a2b287ab 6x38x25y2yx2yy2 (a2bb3)(3a2b26b3) (8x2y8xy2)(4x2y9xy2) 3x29x2(6x22x)9(x22x) 144(1a)(1aa2)2(1aa2a3) (4a2b2ab)(5a2b2ab) (4x26x4)(4x22x3) (5y26y7)3(92y2y2) 一、计算。 9x2y3x2y 100b216
2、.5b2 1 1 a2bccba2 a2b0.3a2b 2 5 1 1 mnmn8 5x3y28.5x3y2 3 3 7ab5a2b257ab25a2b274ab 2x38x2y2yx28yy2 (3a2b8b3)(9a2b2b3) (x2y2xy2)(7x2yxy2) 8z25z2(3z26z)9(z24z) 38(1a)(1aa2)4(1aa2a3) (9a2b5ab)(4a2b4ab) (5x22x4)(8x24x1) (7z25z7)5(46z5z2) 一、计算。 6x2y9x2y 50a20.5a2 1 1 a2bccba2 9a2b0.6a2b 4 6 1 1 pqpq1 7x2y
3、4.5x2y 3 5 ab9a2b298ab28a2b226ab 4x34x25y2y9x2yy2 (8a2b4b3)(4a2b25b3) (2x2y7xy2)(x2y3xy2) 7b23b2(7b23b)8(b26b) 94(1a)(1aa2)2(1aa2a3) (a2b7ab)(a2bab) (8t24t7)(7t23t2) (4c23c6)3(95c4c2) 一、计算。 3x2y6x2y 90c212.5c2 1 1 a2bccba2 a2b0.2a2b 5 2 1 1 mnmn3 6x2y24.5x2y2 5 4 4ab5a2b238ab29a2b299ab 8x38x26y2y9x2
4、y6y2 (a2bb3)(a2b2b3) (x2y8xy2)(x2y2xy2) 7t23t2(9t24t)6(t22t) 119(1a)(1aa2)5(1aa2a3) (9a2b4ab)(a2b6ab) (8m22m3)(4m26m2) (2b24b5)2(62b2b2) 一、计算。 5x2y8x2y 60x22.5x2 1 1 a2bccba2 a2b0.5a2b 6 6 1 1 xyxy4 9a2b27.5a2b2 3 2 ab9a2b225ab28a2b233ab 7x32x24y25yx2yy2 (5a2b7b3)(6a2b2b3) (4x2yxy2)(7x2y9xy2) 2y26y2
5、(3y29y)4(y26y) 153(1a)(1aa2)3(1aa2a3) (6a2bab)(6a2b8ab) (2b25b8)(8b25b2) (2x26x9)5(92x7x2) 一、计算。 x2y3x2y 30s216.5s2 1 1 a2bccba2 a2b0.4a2b 2 4 1 1 pqpq10 8x2y5.5x2y 5 3 ab5a2b288ab28a2b285ab 4x38x2y2y4x24y3y2 (4a2b6b3)(6a2b2b3) (4x2y3xy2)(4x2yxy2) 7m25m2(4m29m)7(m22m) 189(1a)(1aa2)5(1aa2a3) (4a2b8ab
6、)(3a2bab) (7a24a3)(4a24a9) (7a25a9)5(84a8a2) 一、计算。 x2y4x2y 90c217.5c2 1 1 a2bccba2 a2b0.6a2b 3 2 1 1 pqpq9 3x3y24.5x3y2 5 3 8ab2a2b256ab29a2b244ab 5x36x29y25yx2y7y2 (a2bb3)(5a2b2b3) (4x2yxy2)(3x2y8xy2) 5x28x2(7x22x)6(x23x) 45(1a)(1aa2)5(1aa2a3) (8a2bab)(8a2bab) (2m26m3)(2m26m5) (7c22c2)2(25c5c2) 一、计
7、算。 5x2y6x2y 50b211.5b2 1 1 a2bccba2 a2b0.3a2b 5 5 1 1 abab2 5a3b8.5a3b 5 4 2ab8a2b295ab24a2b227ab 7x37x22y29y9x29yy2 (a2b9b3)(a2b2b3) (7x2yxy2)(x2y6xy2) 7s27s2(4s24s)9(s28s) 112(1a)(1aa2)5(1aa2a3) (7a2bab)(a2bab) (5m25m7)(7m26m8) (6t25t2)5(92t3t2) 一、计算。 x2y6x2y 100c218.5c2 1 1 a2bccba2 a2b0.8a2b 3 6
8、 1 1 mnmn9 4ab29.5ab2 2 4 ab7a2b223ab29a2b277ab 4x33x29y2y2x2y2y2 (7a2bb3)(5a2b28b3) (x2yxy2)(7x2y2xy2) 9s23s2(6s27s)7(s29s) 137(1a)(1aa2)4(1aa2a3) (a2bab)(a2bab) (2s23s6)(5s24s4) (7b26b1)5(23b9b2) 一、计算。 4x2y4x2y 10c20.5c2 1 1 a2bccba2 a2b0.8a2b 2 6 1 1 stst8 3ab25.5ab2 4 6 ab9a2b295ab27a2b219ab 9x3
9、2x24y25yx2y7y2 (a2b9b3)(a2b2b3) (x2yxy2)(9x2yxy2) 2n26n2(2n23n)8(n27n) 186(1a)(1aa2)2(1aa2a3) (3a2b5ab)(a2b2ab) (4z26z6)(8z25z5) (6t26t5)3(65t9t2) 一、计算。 x2y6x2y 60b24.5b2 1 1 a2bccba2 a2b0.3a2b 3 6 1 1 abab1 5x2y4.5x2y 4 2 ab2a2b288ab23a2b257ab 9x37x22y23y3x25y4y2 (a2bb3)(8a2b27b3) (x2yxy2)(8x2y9xy2
10、) 2m25m2(5m25m)4(m23m) 52(1a)(1aa2)2(1aa2a3) (2a2b9ab)(3a2b3ab) (5z24z9)(4z24z8) (9a23a4)2(26a5a2) 一、计算。 x2y2x2y 20t25.5t2 1 1 a2bccba2 a2b0.8a2b 4 2 1 1 pqpq9 3a2b23.5a2b2 4 4 ab5a2b255ab29a2b214ab 8x38x29y23y9x25y9y2 (a2b9b3)(5a2b2b3) (x2y4xy2)(x2yxy2) 8b22b2(2b24b)2(b29b) 205(1a)(1aa2)5(1aa2a3) (
11、7a2bab)(4a2b3ab) (4s24s4)(7s22s9) (6x24x6)3(72x6x2) 一、计算。 x2y3x2y 30t219.5t2 1 1 a2bccba2 2a2b0.5a2b 4 4 1 1 mnmn4 10ab21.5ab2 6 3 ab4a2b267ab22a2b247ab 9x37x2y23y6x2y2y2 (8a2b4b3)(8a2b27b3) (5x2yxy2)(x2yxy2) 6a28a2(9a24a)7(a24a) 98(1a)(1aa2)4(1aa2a3) (a2bab)(5a2b4ab) (8c24c2)(5c22c1) (9c26c2)5(32c8c2) 一、计算。 x2y8x2y 50m25.5m2 1 1 a2bccba2 a2b0.9a2b 3 3 1 1 pqpq3 3x2y2
