初一数学上册计算题天天练 40.docx

1、初一数学上册计算题天天练 40 5 2 ()()(6) 16(3)3(3) 7 7 3 1 1 ( )( ） 27(30)6(10) 2 2 9 1 (0.7)(100) (1)352 (1)2105 9 1 1 1 ()()0 8(4)2(5) 4 5 2 1 4 8 ( )( ) 27(21)8(18) 2 5 7 1 1 ( )(90) (2)353 (1)2218 8 6 (19)(17) 11(20) 8(23.5) 1 1 ()() 61(32) (4)342 5 3 2312(18)(12) 3(10)(0.6)9.2 2 1 1 2 3 2 ()() 1.3()(6.5) 5

2、2 8 7 5 5 (2b8) y2(35b) 20a4(7y9t) (5ay)2(5b6b) 1 (66y)t 2(3b2mn5) 9 1 1 (yz)(ef) 3(8by)9(n8p) 3 3 4n(2n6) 2n(7n5z)(8zn) 8(6b5)8b 3(6y6)(7y1) 4(ab7a)(7a4b) 8(abc2a)6(7a3abc) 3(xy6z)(xy8z) 2(pqpr)(4pqpr) 5 x 1 x 0.7x0.14.97.2x 9 8 6 2 1 5x3x 7(x5)3(x8)8 7 4 1 1 (2x7)x3 6x9(13x)1 3 5 y3 y3 7 0.5x7.5(x

3、7)40 2 6 1 2 (44x)(5x2) 6(2x3)18 4 5 5 6 ()()(4) 28(2)2(4) 7 7 10 1 1 ( )( ） 10(17)1(16) 9 6 7 1 (0.2)(4) (3)352 (1)1953 5 1 1 1 ()()0 6(2)2(4) 3 2 4 1 1 1 ( )( ) 2(27)7(14) 5 2 2 1 3 ( )(90) (1)353 (1)2655 6 2 (9)(13) 14(2) 2.5(9) 1 1 ()() 91(42) (4)354 8 2 164(16)(19) 4.6(5.4)(1.2)7.2 2 1 1 1 4 4

4、()() 6.2()(6.5) 5 3 8 7 5 5 (7n8) x5(24b) 20m2(3y2z) (9my)3(5n9b) 1 (22x)z 4(2d6ab9) 5 1 1 (ab)(st) 4(8ay)5(m8p) 7 2 5y(4y1) y(3y7z)(4z4y) 4(5a8)3a 9(3m1)(3m6) 7(ab8a)(4a8b) 13(abc3a)6(6a5abc) 6(xy4z)(xy2z) 4(pqpr)(2pqpr) 5 x 1 x 0.8x0.30.95.7x 6 4 6 8 1 9x5x 3(x7)6(x4)11 3 6 1 4 (4x2)x6 7x3(19x)1 5

5、 5 y2 y2 4 1.5x4.5(x9)40 4 5 1 2 (23x)(3x3) 3(4x9)8 4 5 1 4 ()()(3) 9(1)2(5) 7 7 5 1 1 ( )( ） 1(18)10(10) 4 6 9 1 (0.8)(900) (5)422 (1)2078 8 1 1 1 ()()0 16(1)2(5) 6 2 6 1 7 5 ( )( ) 30(30)3(11) 5 6 6 5 9 ( )(80) (2)223 (1)1967 4 8 (9)(3) 3(10) 8(23) 1 1 ()() 150(143) (2)232 7 8 2219(5)(6) 3.9(4.4)(

6、2)5.5 2 1 1 3 9 4 ()() 5.8()(5.5) 7 2 7 5 5 5 (2m7) x4(18a) 11x5(3b2c) (2xb)2(7m5a) 1 (82x)c 6(8d3mn1) 2 1 1 (yz)(mn) 2(7bx)8(n2q) 2 6 3y(7y2) 5y(2y6d)(4dy) 6(8a1)5a 6(8m8)(6m3) 2(ab2a)(4a9b) 18(abc8a)9(6a5abc) 2(xy4z)(xy9z) 6(pqpr)(2pqpr) 7 x 1 x 0.6x0.94.68.6x 6 8 3 4 1 6x2x 4(x3)2(x2)19 5 6 1 2 (

7、5x9)x5 4x9(13x)6 6 5 y1 y1 8 4.5x9.5(x8)40 3 5 1 2 (42x)(5x1) 3(6x4)9 3 7 6 4 ()()(4) 2(3)2(5) 7 7 1 1 10 ( )( ） 3(27)5(16) 7 2 9 1 (0.9)(30) (1)232 (1)1873 2 1 1 1 ()()0 20(2)2(5) 2 4 8 1 1 3 ( )( ) 29(30)8(16) 8 7 4 7 3 ( )(80) (4)352 (1)2907 8 2 (4)(15) 2(13) 15(14) 1 1 ()() 140(81) (5)353 7 9 31

8、20(11)(28) 4.2(5.8)(1.5)3.8 2 1 1 3 4 4 ()() 7.6()(5.4) 5 7 8 5 5 5 (8x6) z8(93a) 6a3(9b6c) (2ab)7(9x2a) 1 (1210z)c 2(4d2ab5) 2 1 1 (bc)(st) 3(7by)7(m4p) 4 6 2y(2y9) 8y(7y6q)(7q2y) 5(4s4)6s 7(8b10)(2b6) 3(ab4a)(8a8b) 15(abc7a)4(2a7abc) 8(xy5z)(xy6z) 6(pqpr)(5pqpr) 5 x 1 x 0.1x0.37.58.4x 6 2 3 2 1 8x

9、7x 9(x4)4(x4)5 3 9 1 4 (5x1)x9 9x9(11x)1 6 5 y2 y1 7 5x4.5(x8)5 3 5 1 2 (14x)(2x4) 7(8x3)16 7 5 4 3 ()()(1) 18(3)3(2) 7 7 1 1 1 ( )( ） 3(10)4(11) 4 2 3 1 (0.6)(800) (3)232 (1)1354 8 1 1 1 ()()0 17(3)2(4) 3 6 7 1 1 4 ( )( ) 20(14)8(14) 2 6 5 5 4 ( )(50) (1)423 (1)2253 4 3 (1)(17) 13(11) 8(14) 1 1 ()(

10、) 55(173) (3)332 4 9 1019(29)(26) 4.3(3.2)(2.9)1.7 2 1 1 4 2 9 ()() 9.1()(7.8) 5 7 2 7 5 5 (6a7) y2(12a) 18x7(7b5z) (4xb)9(6a9a) 1 (128y)z 5(4c3xy6) 2 1 1 (yz)(pq) 3(7ay)4(n5q) 6 4 5n(7n7) 8n(4n7s)(2sn) 8(9s6)6s 3(2b8)(3b6) 9(ab2a)(8a7b) 14(abc9a)7(3a9abc) 8(xy4z)(xy4z) 7(pqpr)(8pqpr) 7 x 1 x 0.5x0.

11、70.83x 6 4 9 4 1 4x6x 4(x6)9(x1)11 7 3 1 4 (3x6)x6 9x7(14x)7 3 5 y3 y1 7 1.5x3.5(x8)35 3 6 1 2 (22x)(3x3) 8(3x8)3 9 9 6 2 ()()(10) 6(1)2(5) 7 7 5 1 4 ( )( ） 17(13)3(18) 4 8 3 1 (0.5)(900) (1)313 (1)2944 8 1 1 1 ()()0 1(2)3(1) 3 7 2 1 4 1 ( )( ) 14(19)2(18) 3 3 8 5 7 ( )(100) (5)212 (1)2847 4 6 (1)(4

12、) 5(9) 14(14) 1 1 ()() 110(58) (0)313 7 7 3212(8)(28) 7(7.5)(4.5)4.8 2 1 1 1 6 2 ()() 4.3()(3.3) 7 7 7 5 5 5 (8b8) z4(67b) 9x9(7b3z) (9xb)2(8b6b) 1 (1610z)z 3(7c5xy9) 5 1 1 (xy)(st) 2(9ax)4(m9p) 8 6 9y(6y6) y(3y4d)(2d9y) 8(2m7)2m 3(3b8)(2b5) 9(ab6a)(7a7b) 5(abc5a)2(7a3abc) 5(xy8z)(xy2z) 8(pqpr)(3pqp

13、r) 7 x 1 x 0.4x0.14.21.8x 6 4 9 2 1 6x4x 2(x1)8(x7)7 9 2 1 3 (7x2)x2 5x6(2x)2 6 5 y3 y2 4 0.5x6(x5)30 4 5 1 2 (24x)(2x2) 2(3x3)5 8 3 6 3 ()()(8) 28(1)3(1) 7 7 7 1 10 ( )( ） 13(11)1(17) 6 2 9 1 (0.4)(80) (4)323 (1)2051 4 1 1 1 ()()0 6(3)3(1) 5 9 3 1 1 4 ( )( ) 1(30)3(18) 8 2 3 1 8 ( )(90) (3)253 (1)2687 3 7 (13)(19) 3(17) 0.5(23.5) 1 1 ()() 13(131) (3)412 8 4 33(7)(7) 3.1(3)(4.4)0.5 2 1 1 2 6 3 ()() 5.6()(4.1) 3 4 9 5 5 5 (5a3) z4(32c) 5a4(3b8t) (8ab)9(5a4c) 1 (142z)t 3(4c6xy4) 6 1 1 (yz)(pq) 2(7by)9(n5p) 9 7 2x(6x5) 7x(5x5c)(6c2x)