初一数学上册计算题专项训练22.docx

1、初一数学上册计算题专项训练22 6 3 ()()(10) 14(4)3(2) 7 7 1 1 8 ( )( ） 30(24)1(14) 5 4 7 1 (0.5)(90) (1)332 (1)2145 3 1 1 1 ()()0 27(4)3(2 5 3 3 1 5 5 ( )( ) 1(17)5(15) 4 6 4 1 4 ( )(10) (1)412 (1)2204 2 3 (12)(18) 8(17) 4.5(21) 1 1 ()() 81(119) (2)452 2 6 2719(14)(10) 1.8(4.5)(3.2)7.4 2 1 1 2 7 8 ()() 6.8()(2.3)

2、3 5 6 5 5 5 (9y8) x5(79a) 6m9(5n3t) (8mn)8(4y9a) 4 (104x)t 4(8a3ab8) 5 1 1 (xy)(st) 3(9bx)9(n9p) 2 3 3x(2x1) x(7x9c)(8c4x) 8(9a3)4a 1(6y9)(6y9) 2(ab6a)(2a7b) 16(abc5a)5(3a7abc) 2(xy2z)(xy8z) 8(pqpr)(8pqpr) 7 x 1 x 0.4x0.88.37.5x 6 2 6 8 1 3x4x 6(x5)9(x2)11 3 6 1 2 (9x6)x6 9x3(20x)9 4 5 y1 y1 8 2x7(x

3、7)30 3 5 0.8x0.69.52.6x 9(8x3)18 4 2 ()()(8) 1(1)3(4) 7 7 6 1 10 ( )( ） 3(16)5(17) 7 2 9 1 (0.5)(900) (4)313 (1)1351 8 1 1 1 ()()0 25(4)3(5 3 9 7 1 5 1 ( )( ) 11(12)3(16) 8 6 3 3 1 ( )(80) (1)422 (1)1513 4 4 (2)(3) 2(5) 8(19) 1 1 ()() 131(52) (5)353 6 6 3211(30)(5) 7.1(0.7)(0.5)4.5 2 1 1 4 4 1 ()()

4、8.7()(5.1) 7 3 6 7 5 5 (2y9) y3(77c) 4m5(8n6t) (9mn)3(6y3c) 1 (104y)t 8(8b5xy9) 9 1 1 (yz)(mn) 3(9ay)2(m8p) 6 5 9n(9n2) 5n(2n6c)(8cn) 7(9s8)4s 10(6b5)(3b6) 8(ab6a)(2a6b) 5(abc2a)6(9a5abc) 8(xy2z)(xy4z) 7(pqpr)(5pqpr) 7 x 1 x 0.2x0.63.97.5x 9 4 3 4 1 9x2x 3(x6)8(x5)16 7 3 1 1 (2x8)x3 3x7(14x)4 2 5 y1

5、 y2 5 1.5x5.5(x3)40 4 5 0.1x0.33.20.4x 8(8x9)11 3 3 ()()(8) 2(1)3(2) 7 7 2 1 1 ( )( ） 23(25)5(20) 3 6 9 1 (0.6)(100) (4)342 (1)1151 7 1 1 1 ()()0 8(1)2(4 6 2 2 1 1 7 ( )( ) 13(22)8(14) 2 5 6 3 4 ( )(40) (1)322 (1)2618 4 5 (17)(5) 16(4) 8(1.5) 1 1 ()() 40(125) (0)422 7 6 3311(3)(26) 0.3(5.5)(2)2 2 1

6、1 3 3 7 ()() 7.5()(4.1) 5 3 3 7 5 5 (4a6) z5(78c) 6m6(2y9c) (7my)9(8a4c) 1 (24z)c 6(6b6xy6) 4 1 1 (yz)(st) 5(9bx)5(m9p) 9 6 3y(6y3) 6y(7y8d)(5dy) 7(7b7)7b 9(2a1)(7a9) 6(ab6a)(5a9b) 9(abc4a)6(3a4abc) 8(xy7z)(xy3z) 7(pqpr)(6pqpr) 5 x 1 x 0.4x0.99.83.4x 3 2 9 8 1 3x4x 3(x5)2(x2)16 7 8 1 1 (3x5)x2 2x4(8

7、x)6 7 5 y3 y3 1 2.5x1.5(x2)15 4 6 0.1x0.39.67.9x 2(9x8)20 5 2 ()()(4) 18(3)2(4) 7 7 3 1 4 ( )( ） 10(24)1(10) 4 2 5 1 (0.2)(7) (3)453 (1)1141 2 1 1 1 ()()0 18(1)2(1 3 2 3 1 1 6 ( )( ) 26(17)9(10) 4 5 7 1 1 ( )(40) (4)212 (1)1928 7 3 (16)(20) 6(13) 12(15) 1 1 ()() 190(183) (5)323 4 7 91(6)(6) 8.5(1.3)

8、(0.9)8.9 2 1 1 2 3 8 ()() 9.4()(4.3) 3 2 6 5 5 5 (8b7) y4(23a) 4m5(8y7t) (5my)5(6b4a) 1 (162y)t 7(5a7mn6) 7 1 1 (xy)(mn) 5(8bx)6(n5q) 9 8 2a(7a4) a(7a5d)(3da) 8(3t7)3t 3(8y3)(7y1) 5(ab7a)(9a2b) 13(abc7a)2(2a4abc) 5(xy7z)(xy5z) 8(pqpr)(4pqpr) 7 x 1 x 0.6x0.39.85.2x 6 8 3 2 1 2x4x 4(x7)7(x2)8 9 5 1 4

9、(7x5)x3 8x9(19x)2 6 5 y1 y3 7 4x5.5(x2)40 4 6 0.9x0.95.80.4x 2(5x2)15 2 2 ()()(3) 10(4)3(1) 7 7 5 1 1 ( )( ） 9(27)2(16) 4 6 5 1 (0.8)(6) (5)332 (1)2140 2 1 1 1 ()()0 13(1)3(4 8 3 3 1 1 1 ( )( ) 28(11)4(17) 6 6 8 1 1 ( )(20) (5)432 (1)1457 2 6 (20)(13) 14(9) 9(2) 1 1 ()() 111(136) (0)313 7 8 372(22)(

10、14) 4.6(7.3)(0.9)5.4 2 1 1 4 8 6 ()() 3.2()(7.9) 3 3 5 7 5 5 (7m3) y5(95b) 4m4(4b6z) (6mb)8(7m6b) 1 (1610y)z 7(6c4xy1) 7 1 1 (yz)(pq) 2(9ay)8(n5q) 7 5 6x(9x3) 4x(6x5c)(4cx) 8(8s9)4s 9(4x4)(7x8) 6(ab6a)(8a4b) 8(abc7a)4(8a9abc) 3(xy2z)(xy8z) 4(pqpr)(4pqpr) 7 x 1 x 0.6x0.22.66.8x 3 4 3 4 1 4x7x 7(x1)8(x2)5 3 6 1 1 (4x1)x6 5x2(8x)4 3 5 y3 y3 8 2x2(x3)5 2 6 0.1x0.44.29x 3(5x6)7