1、初一数学上册计算训练营98 4 6 ()()(4) 15(3)3(4) 7 7 8 1 6 ( )( ) 12(26)3(15) 9 8 5 1 (0.8)(30) (2)323 (1)1005 4 1 1 1 ()()0 28(3)2(3 7 7 2 1 9 3 ( )( ) 22(24)4(18) 3 8 4 1 8 ( )(40) (4)253 (1)2218 5 7 (16)(3) 18(10) 2.5(0.5) 1 1 ()() 171(12) (1)334 8 5 3617(5)(4) 8.6(9.2)(2.4)4.9 2 1 1 2 1 1 ()() 8.1()(9.3) 9 9
2、 8 7 5 5 (5y3) y2(93a) 13a2(8n2z) (6an)2(6y3a) 1 (166y)z 9(5b5xy5) 7 1 1 (ab)(ef) 4(7bx)7(n6q) 5 4 8n(4n8) 6n(2n6s)(5s5n) 3(5m1)7m 10(5m2)(3m1) 8(ab7a)(8a5b) 17(abc3a)8(2a9abc) 2(xy5z)(xy9z) 2(pqpr)(5pqpr) 5 x 1 x 0.4x0.98.58x 9 8 3 8 1 4x5x 3(x5)6(x6)11 3 9 1 2 (3x9)x1 5x5(7x)3 7 5 y2 y2 9 5x8.5(x8
3、)40 3 5 0.3x0.13.69.5x 3(6x6)20 4 2 ()()(8) 14(2)3(2) 7 7 8 1 1 ( )( ) 4(22)3(14) 7 6 9 1 (0.9)(100) (2)223 (1)2986 5 1 1 1 ()()0 26(4)3(1 5 3 5 1 8 5 ( )( ) 14(12)10(18) 2 7 4 6 1 ( )(40) (1)422 (1)1540 5 7 (14)(9) 10(3) 9.5(19.5) 1 1 ()() 55(77) (1)243 3 8 718(3)(19) 5.9(7.4)(2.9)8.1 2 1 1 2 1 1 (
4、)() 5.3()(2.8) 7 9 6 5 5 5 (3x6) x5(34c) 4x7(6n7z) (3xn)4(2x5c) 7 (106x)z 9(6a2xy8) 6 1 1 (yz)(ef) 3(6ay)2(m3p) 3 5 5x(3x8) x(5x6z)(3z5x) 8(6s4)9s 9(5b2)(7b10) 6(ab9a)(7a7b) 12(abc5a)5(7a3abc) 9(xy3z)(xy2z) 8(pqpr)(3pqpr) 5 x 1 x 0.7x0.36.88.2x 9 6 9 2 1 4x7x 8(x2)8(x3)8 7 8 1 3 (8x4)x1 4x8(7x)6 3 5
5、 y2 y2 6 3.5x9.5(x3)30 2 6 0.5x0.140.6x 6(2x6)4 4 2 ()()(4) 24(3)2(2) 7 7 5 1 8 ( )( ) 24(27)3(13) 4 2 9 1 (0.4)(10) (3)412 (1)2672 5 1 1 1 ()()0 10(4)2(5 8 8 6 1 5 3 ( )( ) 24(21)5(19) 8 4 4 1 1 ( )(40) (4)213 (1)2929 7 5 (4)(14) 1(3) 12.5(17.5) 1 1 ()() 200(106) (5)454 9 7 1418(20)(17) 8.5(5.5)(2.
6、3)7.6 2 1 1 1 1 1 ()() 1.7()(1.8) 9 9 7 5 5 5 (6b8) y7(17a) 14a2(7y7t) (4ay)7(8b5a) 2 (810y)t 9(2b7xy3) 3 1 1 (xy)(st) 2(9ax)4(n9q) 6 3 8y(3y2) y(3y4q)(5q2y) 4(7b6)4b 3(4m4)(5m2) 2(ab8a)(6a2b) 8(abc8a)3(3a3abc) 5(xy8z)(xy2z) 6(pqpr)(9pqpr) 5 x 1 x 0.3x0.36.68.2x 6 8 6 2 1 2x6x 9(x7)8(x2)17 7 2 1 4 (
7、6x5)x1 4x4(19x)6 6 5 y1 y3 3 3.5x6(x4)5 4 5 0.6x0.76.70.4x 5(6x2)12 4 3 ()()(4) 26(3)2(1) 7 7 1 1 4 ( )( ) 27(15)4(15) 5 4 3 1 (0.8)(600) (5)223 (1)1459 7 1 1 1 ()()0 5(4)3(3 3 4 5 1 1 4 ( )( ) 13(18)6(17) 7 5 5 1 1 ( )(40) (3)432 (1)2548 2 8 (15)(20) 20(16) 15(5.5) 1 1 ()() 52(178) (4)254 7 5 302(1
8、7)(21) 9.9(2.9)(0.3)1 2 1 1 4 2 8 ()() 7.3()(3.9) 3 8 7 7 5 5 (3n4) z7(32c) 10m8(2n3z) (8mn)6(6n6c) 1 (22z)z 4(5a9xy4) 3 1 1 (bc)(pq) 3(9ay)7(m6q) 4 3 9b(8b3) 7b(9b6d)(5db) 6(7b10)9b 3(4b6)(4b5) 4(ab9a)(5a7b) 15(abc6a)2(9a5abc) 4(xy2z)(xy9z) 9(pqpr)(4pqpr) 5 x 1 x 0.4x0.20.74x 6 4 9 2 1 6x4x 6(x9)3(
9、x8)17 3 5 1 4 (7x4)x1 9x3(8x)1 2 5 y2 y3 4 4x4.5(x8)40 2 5 0.6x0.38.49.8x 6(7x3)10 4 3 ()()(1) 21(4)2(4) 7 7 6 1 1 ( )( ) 18(27)7(19) 5 4 9 1 (0.5)(8) (5)413 (1)1147 2 1 1 1 ()()0 10(3)3(2 9 3 2 1 5 1 ( )( ) 15(12)6(20) 5 6 3 5 4 ( )(40) (1)323 (1)1405 6 3 (13)(17) 12(7) 5(2) 1 1 ()() 83(145) (2)433
10、 7 3 249(21)(20) 7.6(7.8)(3.8)6.4 2 1 1 3 9 9 ()() 9.5()(8.9) 7 6 6 7 5 5 (5m5) y7(49b) 5m3(8b7c) (6mb)7(4m4b) 1 (202y)c 3(2a5ab1) 9 1 1 (bc)(st) 4(6bx)5(n6p) 6 3 7m(8m2) 3m(3m5p)(6p3m) 9(7a8)2a 5(7b4)(9b2) 9(ab5a)(8a4b) 7(abc2a)5(4a3abc) 2(xy7z)(xy4z) 4(pqpr)(6pqpr) 7 x 1 x 0.8x0.42.91.1x 6 2 6 8 1 6x7x 4(x7)2(x5)14 3 4 1 4 (4x7)x8 7x9(6x)5 7 5 y1 y2 8 3.5x10(x8)40 2 6 0.9x0.18.33.5x 4(2x8)20
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