1、初一数学上册计算题专项训练74 6 4 ()()(6) 19(1)3(5) 7 7 1 1 8 ( )( ) 9(19)3(10) 2 6 9 1 (0.3)(5) (4)432 (1)1973 8 1 1 1 ()()0 18(1)2(3 8 9 8 1 5 1 ( )( ) 26(16)1(16) 7 6 4 3 1 ( )(100) (5)442 (1)1528 2 6 (6)(4) 10(6) 8(2.5) 1 1 ()() 60(144) (5)223 6 4 37(20)(22) 1.4(9.7)(1.2)0.8 2 1 1 3 4 7 ()() 3.8()(3.3) 9 5 9
2、7 5 5 (8b6) y4(32b) 8m4(4b2c) (3mb)7(3b4b) 1 (88y)c 2(3b3mn4) 7 1 1 (xy)(pq) 5(7ax)5(n2q) 6 4 3b(7b5) b(2b2z)(3zb) 9(7a4)4a 2(4n6)(8n5) 2(ab5a)(4a2b) 17(abc5a)2(3a8abc) 7(xy3z)(xy6z) 6(pqpr)(4pqpr) 7 x 1 x 0.4x0.30.19.5x 3 8 9 4 1 5x7x 9(x7)6(x2)1 9 6 1 4 (2x7)x3 6x4(9x)6 9 5 y2 y3 5 1.5x9.5(x4)30 2
3、 5 0.5x0.75.89.3x 8(8x5)1 2 3 ()()(1) 13(2)2(3) 7 7 4 1 1 ( )( ) 30(28)8(18) 3 4 3 1 (0.3)(20) (2)412 (1)1206 5 1 1 1 ()()0 4(4)3(2 7 6 2 1 1 5 ( )( ) 9(21)4(16) 5 5 4 1 1 ( )(100) (5)252 (1)2108 3 8 (7)(6) 17(10) 10.5(15.5) 1 1 ()() 52(118) (5)432 7 5 3816(23)(10) 4.3(8.9)(5)0.7 2 1 1 3 9 3 ()() 2.
4、7()(6.6) 9 2 7 5 5 5 (5y9) z5(79c) 8m4(4n5z) (7mn)7(9y2c) 1 (22z)z 9(2c8xy9) 9 1 1 (bc)(mn) 5(6bx)5(m9p) 7 3 2m(4m5) m(4m7q)(2qm) 5(8s1)8s 7(5x5)(5x6) 7(ab5a)(3a5b) 18(abc7a)5(2a9abc) 9(xy8z)(xy7z) 8(pqpr)(7pqpr) 5 x 1 x 0.8x0.21.17.4x 6 6 6 8 1 4x6x 9(x7)4(x9)14 5 6 1 4 (9x5)x7 4x9(8x)9 6 5 y3 y2 9
5、 1.5x6(x5)5 4 5 0.5x0.57.56.5x 8(5x8)13 4 4 ()()(9) 10(2)3(1) 7 7 1 1 4 ( )( ) 14(30)9(17) 5 4 3 1 (0.6)(80) (1)243 (1)2882 3 1 1 1 ()()0 12(2)3(3 9 6 7 1 9 3 ( )( ) 11(29)6(16) 2 8 2 9 1 ( )(90) (2)243 (1)1425 8 3 (13)(3) 4(10) 3.5(6) 1 1 ()() 124(206) (0)454 9 8 344(28)(15) 2.5(4.7)(3.1)8.9 2 1 1
6、2 4 9 ()() 8.7()(4.7) 3 5 2 5 5 5 (3m7) z9(96b) 17x8(7b2t) (4xb)3(2m4b) 1 (182z)t 9(6d6xy6) 6 1 1 (bc)(st) 2(6by)5(n5p) 7 9 5m(7m9) 5m(8m8p)(9pm) 9(8b5)5b 3(5n1)(5n10) 4(ab8a)(2a8b) 7(abc7a)9(9a9abc) 3(xy5z)(xy7z) 7(pqpr)(6pqpr) 7 x 1 x 0.7x0.33.18.1x 6 8 6 4 1 9x4x 2(x5)3(x8)14 3 4 1 4 (6x8)x4 9x2(
7、3x)3 7 5 y1 y2 5 3.5x1(x6)45 3 6 0.5x0.68.17.7x 9(5x5)20 4 1 ()()(4) 23(4)3(5) 7 7 10 1 10 ( )( ) 1(28)3(13) 9 6 9 1 (0.4)(1) (2)212 (1)1660 3 1 1 1 ()()0 25(4)2(5 4 6 4 1 4 4 ( )( ) 5(13)8(17) 5 5 3 1 1 ( )(40) (5)433 (1)2080 5 7 (4)(4) 12(9) 1(7.5) 1 1 ()() 93(610) (3)253 5 2 122(23)(6) 2.8(0.9)(3
8、.1)7.8 2 1 1 2 1 4 ()() 5.1()(4.5) 7 3 8 7 5 5 (8a8) x6(89b) 3a7(6y8t) (8ay)8(5a3b) 1 (204x)t 2(6d3ab5) 5 1 1 (bc)(ef) 5(7bx)7(m5q) 5 4 4y(3y5) y(9y9d)(4d6y) 6(5t2)7t 1(3x8)(6x6) 5(ab6a)(5a4b) 16(abc8a)2(5a7abc) 3(xy7z)(xy5z) 8(pqpr)(5pqpr) 7 x 1 x 0.6x0.27.90.7x 3 8 9 8 1 5x3x 6(x5)5(x3)18 9 6 1 3
9、(6x7)x9 2x2(1x)9 4 5 y1 y3 5 3x1(x8)10 3 6 0.6x0.48.48.5x 4(4x1)10 5 6 ()()(8) 17(2)3(2) 7 7 1 1 6 ( )( ) 23(11)9(16) 7 4 7 1 (0.7)(500) (2)242 (1)2094 7 1 1 1 ()()0 10(4)3(1 6 3 7 1 6 1 ( )( ) 24(21)10(17) 3 5 2 6 1 ( )(90) (5)442 (1)1075 7 7 (18)(10) 3(3) 12.5(3.5) 1 1 ()() 64(105) (4)332 9 3 59(2
10、1)(5) 7.5(7.6)(3.4)2.8 2 1 1 2 6 3 ()() 1.3()(3.7) 7 5 8 5 5 5 (6b2) x8(22a) 8x3(7b6c) (8xb)6(5b9a) 7 (88x)c 8(6d4xy4) 6 1 1 (xy)(st) 4(9ax)6(m2q) 8 4 6m(2m3) m(2m9z)(5zm) 7(6m4)5m 1(7a1)(4a7) 7(ab2a)(5a4b) 19(abc4a)5(9a6abc) 9(xy4z)(xy2z) 9(pqpr)(3pqpr) 7 x 1 x 0.4x0.941.4x 3 8 9 4 1 8x5x 4(x2)8(x9)5 3 6 1 3 (5x6)x3 3x3(13x)6 8 5 y1 y2 7 4x2.5(x2)25 4 6 0.1x0.36.44.3x 4(7x1)11
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