初一数学上册计算题天天练 75.docx

1、初一数学上册计算题天天练 75 1 1 ()() 93(205) (3)212 3 6 2220(19)(3) 6.3(7.5)(4.1)0.6 2 1 1 3 8 4 ()() 3.1()(2.3) 9 9 6 7 5 5 (7m4) x9(93a) 20a7(5b8t) (8ab)3(7m5a) 6 (186x)t 2(2a5mn7) 5 1 1 (yz)(ef) 4(8ax)4(m5p) 5 4 6x(3x7) 6x(8x7z)(8z7x) 6(5b8)5b 6(9a6)(8a4) 7(ab8a)(7a9b) 19(abc9a)3(3a7abc) 8(xy6z)(xy4z) 3(pqpr

2、)(7pqpr) 7 x 1 x 0.5x0.36.32.9x 6 6 9 4 1 7x3x 4(x7)4(x1)11 7 4 1 3 (8x7)x5 5x6(8x)4 5 5 y1 y3 9 0.5x1.5(x5)30 2 6 1 2 (43x)(3x4) 7(5x6)17 3 5 2 5 ()()(5) 10(3)3(2) 7 7 6 1 8 ( )( ） 21(30)5(19) 5 6 9 1 (0.8)(1000) (3)423 (1)1588 6 1 1 1 ()()0 16(3)3(1) 2 2 4 1 4 4 ( )( ) 17(25)2(13) 3 3 3 6 1 ( )(20

3、) (1)342 (1)2720 5 2 (9)(3) 3(17) 13.5(20) 1 1 ()() 155(88) (5)313 3 9 1117(6)(2) 7.7(2.4)(4.5)2.8 2 1 1 4 3 8 ()() 4.1()(7.8) 9 8 2 5 5 5 (6m3) x8(36c) 14m2(4b6t) (8mb)6(8m4c) 6 (66x)t 6(3c9xy3) 5 1 1 (ab)(mn) 4(9ay)4(n8p) 6 9 7x(5x9) 4x(6x4c)(9c6x) 4(6m6)6m 8(4a3)(2a1) 6(ab8a)(6a4b) 13(abc6a)3(5a3

4、abc) 5(xy5z)(xy9z) 9(pqpr)(7pqpr) 5 x 1 x 0.5x0.16.26.2x 9 8 3 4 1 5x8x 5(x8)4(x6)15 3 3 1 4 (3x6)x6 7x7(14x)2 5 5 y2 y3 7 4.5x2(x3)25 3 6 1 2 (12x)(3x1) 7(7x6)10 3 3 5 1 ()()(3) 17(4)2(1) 7 7 1 1 6 ( )( ） 20(17)10(13) 3 2 5 1 (0.3)(9) (1)312 (1)2562 7 1 1 1 ()()0 16(4)2(2) 8 5 7 1 1 8 ( )( ) 24(19)

5、5(14) 2 2 7 7 1 ( )(100) (3)222 (1)1174 6 3 (14)(6) 7(8) 12(20) 1 1 ()() 05(119) (2)222 6 5 3012(27)(12) 2.6(6)(4.7)6.1 2 1 1 3 9 6 ()() 8.9()(8.9) 7 9 5 5 5 5 (4a8) x5(58a) 16x5(4n6z) (6xn)5(5a4a) 1 (210x)z 8(3c8xy4) 4 1 1 (bc)(ef) 3(9by)8(n9p) 4 7 6a(6a1) 6a(6a4s)(7s7a) 3(6n2)7n 6(5b10)(5b10) 4(ab

6、3a)(6a6b) 8(abc7a)3(7a2abc) 2(xy8z)(xy2z) 3(pqpr)(4pqpr) 7 x 1 x 0.6x0.49.28.3x 6 8 3 4 1 6x4x 4(x4)4(x5)15 9 4 1 3 (2x3)x6 3x2(4x)1 9 5 y3 y1 4 1x3(x4)15 4 5 1 2 (22x)(2x1) 5(3x8)18 8 7 5 6 ()()(9) 23(2)3(3) 7 7 1 1 1 ( )( ） 9(19)7(11) 2 4 3 1 (0.3)(100) (3)222 (1)1784 5 1 1 1 ()()0 8(4)3(2) 3 8 9

7、1 2 1 ( )( ) 25(26)5(19) 2 3 3 1 1 ( )(20) (3)312 (1)1266 2 5 (17)(8) 2(7) 3.5(4) 1 1 ()() 33(169) (5)333 4 8 820(2)(25) 7.6(9.6)(3.6)2.6 2 1 1 1 7 4 ()() 7.8()(5.8) 7 8 7 5 5 5 (6y9) y9(39b) 15a6(3n4z) (8an)5(4y4b) 2 (26y)z 4(9a7ab5) 3 1 1 (bc)(mn) 3(7by)6(n4q) 3 9 7a(3a6) 8a(5a9s)(6s8a) 5(5a3)3a 1

8、0(6a4)(3a7) 6(ab6a)(5a8b) 11(abc4a)9(4a2abc) 6(xy5z)(xy8z) 9(pqpr)(5pqpr) 5 x 1 x 0.2x0.10.81.3x 3 4 9 8 1 6x5x 5(x7)9(x7)4 9 3 1 2 (8x6)x6 2x9(20x)1 6 5 y2 y1 2 3x2.5(x8)15 4 6 1 2 (12x)(4x2) 6(3x4)2 7 5 6 5 ()()(10) 2(3)2(1) 7 7 1 1 4 ( )( ） 25(26)2(20) 3 2 5 1 (0.6)(8) (5)233 (1)2933 2 1 1 1 ()()

9、0 5(1)3(5) 2 2 8 1 1 1 ( )( ) 17(30)7(19) 3 8 8 1 7 ( )(50) (2)422 (1)2772 8 8 (19)(1) 19(14) 11(21.5) 1 1 ()() 175(81) (3)232 5 5 3118(25)(11) 7.5(5.6)(3.6)1.7 2 1 1 4 1 8 ()() 9.5()(1.5) 9 2 5 5 5 5 (7y6) x2(15a) 11m3(3y8c) (9my)8(4y7a) 3 (66x)c 2(7c7bc8) 2 1 1 (xy)(pq) 2(8ax)3(n5p) 9 5 6x(4x2) x(

10、4x2z)(2zx) 4(8s4)8s 2(8n4)(6n4) 3(ab9a)(6a8b) 11(abc3a)2(3a2abc) 4(xy4z)(xy4z) 2(pqpr)(4pqpr) 5 x 1 x 0.6x0.96.74.5x 9 4 3 2 1 2x9x 7(x9)3(x2)5 9 9 1 3 (9x2)x6 2x6(8x)5 8 5 y1 y2 4 3.5x9(x6)30 2 6 1 2 (44x)(5x1) 3(9x2)7 9 5 5 6 ()()(7) 28(4)3(3) 7 7 7 1 8 ( )( ） 8(11)8(16) 6 6 9 1 (0.6)(1000) (4)452

11、 (1)2443 3 1 1 1 ()()0 7(2)3(4) 3 5 8 1 1 1 ( )( ) 26(19)2(15) 7 4 8 1 8 ( )(60) (5)433 (1)2074 8 7 (18)(8) 18(8) 12(20) 1 1 ()() 105(138) (1)322 8 2 156(7)(25) 3.1(0.9)(0.5)3 2 1 1 3 2 4 ()() 2.6()(8.1) 3 8 4 7 5 5 (8y6) y2(63a) 9x9(6n5z) (9xn)3(6y9a) 2 (66y)z 2(9b8ab9) 3 1 1 (xy)(st) 5(8bx)9(n2q)

12、2 6 5n(7n4) n(2n8p)(4pn) 4(3n2)2n 10(5m4)(4m9) 3(ab5a)(5a3b) 5(abc6a)6(7a3abc) 3(xy7z)(xy4z) 4(pqpr)(4pqpr) 5 x 1 x 0.5x0.98.44.6x 6 8 3 4 1 4x4x 5(x9)5(x5)4 9 5 1 4 (7x5)x5 9x9(12x)4 5 5 y2 y1 3 3x5.5(x3)35 3 5 1 2 (23x)(3x3) 7(8x1)12 2 3 1 2 ()()(7) 30(2)3(1) 7 7 1 1 1 ( )( ） 25(22)5(13) 3 2 7 1 (

13、0.1)(100) (1)343 (1)2882 8 1 1 1 ()()0 29(1)2(5) 8 2 5 1 1 7 ( )( ) 2(29)9(11) 8 5 6 7 3 ( )(10) (3)352 (1)1851 6 2 (15)(1) 0(13) 6.5(7) 1 1 ()() 121(153) (2)353 9 3 3215(25)(30) 7.7(9.8)(4.2)5.5 2 1 1 1 8 2 ()() 9.7()(1.3) 3 9 6 7 5 5 (5m7) x4(79a) 4x2(6y3z) (2xy)8(8m5a) 1 (188x)z 3(9d9bc9) 7 1 1 (bc)(ef) 5(9ay)7(n2q) 8 7 5m(2m9) 3m(9m6s)(5sm) 9(6t10)9t 5(9x3)(8x3) 8(ab9a)(7a2b) 20(abc8a)6(5a8abc) 2(xy2z)(xy4z) 5(pqpr)(9pqpr) 5 x 1 x 0.7x0.61.73.6x 3 2 9 4 1 7x6x 4(x1)6(x2)14 5 8 1 1 (9x4)x3 4x7(7x)9 2 5 y3 y3 4 0.5x1(x6)45 3 6 1 2 (14x)(3x4) 8(6x7)19 5 5