1、人教版七年级数学上册整式的加减法练习题精选30一、计算。 9x2y9x2y 100a210.5a2 1 1 a2bccba2 7a2b0.3a2b 2 3 1 1 xyxy3 9x2y24.5x2y2 6 3 ab5a2b236ab22a2b272ab 9x37x27y22y7x29y9y2 (3a2b3b3)(a2b22b3) (x2y7xy2)(x2yxy2) 7y24y2(3y27y)9(y23y) 37(1a)(1aa2)2(1aa2a3) (8a2bab)(a2b7ab) (5n23n4)(4n25n9) (7b25b7)3(33b7b2) 一、计算。 3x2y8x2y 50m219
2、.5m2 1 1 a2bccba2 a2b0.5a2b 6 4 1 1 mnmn2 9a3b6.5a3b 3 5 ab8a2b235ab25a2b254ab 5x39x2y2y5x25yy2 (a2bb3)(a2b2b3) (x2y6xy2)(7x2yxy2) 3b26b2(2b27b)3(b25b) 152(1a)(1aa2)2(1aa2a3) (a2bab)(2a2bab) (6s25s2)(4s22s8) (4x22x7)3(66x2x2) 一、计算。 x2y2x2y 50t29.5t2 1 1 a2bccba2 2a2b0.6a2b 6 3 1 1 mnmn6 3x3y21.5x3y2
3、 6 5 2ab4a2b236ab29a2b243ab 2x35x2y2yx23y7y2 (7a2b2b3)(a2b2b3) (x2yxy2)(3x2yxy2) 2x27x2(9x29x)6(x27x) 193(1a)(1aa2)3(1aa2a3) (a2b8ab)(a2b6ab) (8x24x8)(5x22x9) (9m24m9)3(23m7m2) 一、计算。 8x2y7x2y 100t217.5t2 1 1 a2bccba2 3a2b0.7a2b 6 5 1 1 xyxy6 6a3b7.5a3b 5 2 ab8a2b294ab25a2b223ab 6x37x22y2yx25yy2 (3a2
4、bb3)(2a2b2b3) (6x2yxy2)(4x2yxy2) 7c28c2(9c24c)7(c23c) 24(1a)(1aa2)4(1aa2a3) (a2b4ab)(8a2bab) (9b25b8)(5b26b7) (9b22b3)3(64b4b2) 一、计算。 5x2y3x2y 90m24.5m2 1 1 a2bccba2 a2b0.8a2b 6 4 1 1 xyxy2 10a3b9.5a3b 2 2 5ab3a2b268ab25a2b214ab 7x37x2y28yx26yy2 (4a2bb3)(6a2b2b3) (x2y3xy2)(3x2yxy2) 9c26c2(6c29c)5(c2
5、6c) 153(1a)(1aa2)5(1aa2a3) (a2b4ab)(a2bab) (6n22n1)(4n26n3) (3x25x8)3(94x8x2) 一、计算。 7x2y2x2y 10m211.5m2 1 1 a2bccba2 4a2b0.2a2b 6 2 1 1 pqpq9 6a2b23.5a2b2 3 5 2ab6a2b214ab27a2b272ab 3x33x25y23yx27yy2 (a2bb3)(4a2b23b3) (x2yxy2)(x2yxy2) 9y26y2(3y24y)5(y27y) 207(1a)(1aa2)4(1aa2a3) (8a2b2ab)(8a2b2ab) (5
6、t23t8)(8t22t2) (7n22n1)2(42n9n2) 一、计算。 7x2y3x2y 100a26.5a2 1 1 a2bccba2 6a2b0.7a2b 4 3 1 1 mnmn10 6x2y23.5x2y2 4 5 4ab7a2b262ab24a2b297ab 7x36x25y2yx2y4y2 (a2bb3)(3a2b22b3) (2x2yxy2)(x2y3xy2) 3s23s2(5s24s)9(s25s) 179(1a)(1aa2)3(1aa2a3) (a2bab)(3a2bab) (7b23b7)(3b25b5) (7t24t4)4(83t8t2) 一、计算。 6x2y5x2
7、y 70z22.5z2 1 1 a2bccba2 2a2b0.4a2b 6 5 1 1 abab9 4x3y29.5x3y2 5 6 7ab3a2b298ab26a2b262ab 3x34x2y22yx2yy2 (5a2b3b3)(8a2b23b3) (x2y2xy2)(x2y5xy2) 3m27m2(8m29m)8(m26m) 203(1a)(1aa2)5(1aa2a3) (a2b3ab)(a2bab) (9n25n8)(6n26n2) (4a23a7)4(34a9a2) 一、计算。 x2y5x2y 20x29.5x2 1 1 a2bccba2 a2b0.7a2b 6 5 1 1 mnmn1
8、 8x2y9.5x2y 3 2 4ab9a2b265ab26a2b233ab 8x38x2y2yx22y6y2 (a2bb3)(5a2b2b3) (x2yxy2)(7x2yxy2) 2n24n2(2n24n)2(n28n) 203(1a)(1aa2)4(1aa2a3) (a2bab)(a2b8ab) (6z24z4)(2z22z3) (7y23y4)4(33y8y2) 一、计算。 x2y5x2y 40s23.5s2 1 1 a2bccba2 a2b0.7a2b 3 4 1 1 xyxy2 6a3b2.5a3b 5 4 ab5a2b244ab29a2b218ab 2x32x25y24y8x2yy
9、2 (a2b3b3)(a2b27b3) (2x2y8xy2)(6x2yxy2) 6m23m2(4m25m)9(m29m) 188(1a)(1aa2)5(1aa2a3) (6a2b2ab)(a2b5ab) (6z22z2)(8z25z1) (4m22m1)2(25m4m2) 一、计算。 x2y7x2y 20t215.5t2 1 1 a2bccba2 a2b0.6a2b 2 4 1 1 mnmn10 4a2b27.5a2b2 3 3 9ab9a2b236ab24a2b296ab 6x38x23y24y9x2y4y2 (6a2b4b3)(a2b25b3) (x2y4xy2)(x2yxy2) 9z25
10、z2(6z26z)5(z25z) 204(1a)(1aa2)4(1aa2a3) (a2b4ab)(6a2b4ab) (5b25b5)(4b25b9) (3m26m6)2(66m4m2) 一、计算。 9x2y3x2y 10z219.5z2 1 1 a2bccba2 a2b0.3a2b 2 4 1 1 stst8 9a2b21.5a2b2 3 2 9ab2a2b274ab28a2b232ab 3x39x2y23yx2y2y2 (6a2bb3)(a2b2b3) (x2yxy2)(x2yxy2) 3x24x2(2x23x)5(x24x) 109(1a)(1aa2)5(1aa2a3) (a2bab)(a
11、2bab) (3y23y9)(7y24y3) (2t25t7)5(76t5t2) 一、计算。 7x2y4x2y 50n25.5n2 1 1 a2bccba2 3a2b0.4a2b 4 3 1 1 mnmn10 9a2b23.5a2b2 5 2 5ab8a2b225ab28a2b227ab 3x37x27y2yx23y9y2 (9a2b9b3)(a2b29b3) (4x2y2xy2)(x2y7xy2) 6n24n2(9n24n)4(n22n) 138(1a)(1aa2)5(1aa2a3) (a2b4ab)(6a2b6ab) (7c23c2)(7c25c3) (3a26a3)4(73a9a2) 一、计算。 8x2y9x2y 100a22.5a2 1 1 a2bccba2 a2b0.5a2b 5 3 1 1 mnmn6 10x2y3.5
