1、初一数学上册计算题专项训练19 6 1 ()()(9) 18(2)3(1) 7 7 4 1 4 ( )( ) 25(29)2(20) 3 8 3 1 (0.6)(300) (1)232 (1)2562 9 1 1 1 ()()0 7(3)2(5 3 3 7 1 9 8 ( )( ) 17(24)5(14) 5 8 7 1 1 ( )(30) (3)323 (1)2636 5 2 (8)(3) 3(20) 7(3) 1 1 ()() 171(36) (2)414 5 3 1011(1)(7) 4.4(6.1)(0.5)7.7 2 1 1 1 1 4 ()() 8.1()(2.1) 5 9 9 7
2、 5 5 (7y2) y9(39c) 13a4(2n6c) (8an)5(7y9c) 5 (204y)c 6(7a3bc2) 4 1 1 (bc)(pq) 5(6ax)3(n3q) 4 3 6x(3x5) x(9x4z)(7zx) 4(7n7)8n 3(5n4)(3n8) 4(ab5a)(3a4b) 10(abc6a)7(8a5abc) 7(xy8z)(xy5z) 7(pqpr)(6pqpr) 5 x 1 x 0.8x0.17.34.5x 6 4 6 2 1 5x6x 6(x8)8(x9)13 5 7 1 3 (4x2)x3 8x2(2x)5 7 5 y1 y2 8 4.5x3(x6)35 3
3、 6 0.4x0.17.57.9x 4(5x5)6 4 6 ()()(4) 6(4)2(1) 7 7 10 1 1 ( )( ) 3(28)1(10) 9 6 9 1 (0.6)(40) (4)433 (1)2838 2 1 1 1 ()()0 3(2)2(2 9 4 6 1 4 7 ( )( ) 25(11)4(14) 8 3 8 5 1 ( )(20) (2)413 (1)1724 6 5 (2)(19) 14(16) 12(3) 1 1 ()() 153(82) (4)234 3 5 3217(18)(21) 9.8(6.5)(2.1)0.9 2 1 1 1 4 6 ()() 1.2()
4、(6.9) 9 3 9 5 5 5 (4n4) z5(14c) 10a6(7y8z) (5ay)3(7n7c) 6 (1410z)z 8(3c4ab8) 5 1 1 (yz)(pq) 5(8by)6(m3p) 9 6 8y(8y8) 5y(9y8d)(5dy) 5(2a8)6a 10(3a9)(9a1) 7(ab6a)(4a5b) 14(abc3a)5(6a8abc) 2(xy7z)(xy7z) 3(pqpr)(6pqpr) 7 x 1 x 0.9x0.20.57.5x 9 2 9 2 1 2x5x 9(x3)6(x2)18 5 5 1 1 (7x7)x7 2x7(14x)5 8 5 y2 y
5、2 3 1x2.5(x7)25 3 5 0.8x0.88.13.6x 7(9x1)7 4 6 ()()(4) 15(4)2(2) 7 7 3 1 4 ( )( ) 1(18)4(18) 2 4 3 1 (0.5)(3) (1)333 (1)2151 3 1 1 1 ()()0 26(4)2(5 4 9 3 1 1 1 ( )( ) 20(16)9(16) 5 7 6 5 1 ( )(40) (3)313 (1)1059 6 8 (1)(17) 14(5) 3(1.5) 1 1 ()() 201(53) (4)213 3 6 95(27)(2) 6.1(3)(2.3)5.7 2 1 1 4 3
6、9 ()() 3.5()(4.1) 3 6 4 5 5 5 (9x6) z6(74a) 15m8(5y5t) (6my)7(3x2a) 1 (46z)t 2(2b4ab4) 2 1 1 (yz)(pq) 5(6ax)7(m9p) 9 6 7y(4y4) y(6y7q)(2qy) 8(2n8)7n 10(2b2)(2b9) 3(ab3a)(7a6b) 13(abc3a)8(5a7abc) 2(xy5z)(xy8z) 6(pqpr)(6pqpr) 5 x 1 x 0.8x0.10.38.1x 6 2 6 4 1 7x1x 7(x5)7(x2)12 7 7 1 3 (2x9)x6 8x9(15x)9
7、 7 5 y1 y1 2 5x5.5(x2)30 3 6 0.6x0.74.65.8x 8(6x4)8 4 2 ()()(1) 25(2)3(1) 7 7 1 1 1 ( )( ) 23(20)3(10) 5 2 9 1 (0.7)(4) (2)243 (1)1752 3 1 1 1 ()()0 10(2)3(5 3 6 9 1 1 4 ( )( ) 2(20)8(13) 4 2 5 5 1 ( )(60) (2)212 (1)2370 6 8 (14)(5) 6(12) 12(18.5) 1 1 ()() 191(155) (2)443 2 4 3520(7)(11) 9.6(5.1)(1.5)0.4 2 1 1 4 8 8 ()() 7.6()(8.1) 5 9 4 5 5 5 (5b6) z6(63a) 12x5(6n2t) (5xn)5(3b2a) 3 (810z)t 3(6a2mn5) 4 1 1 (bc)(st) 3(8bx)7(n8q) 7 8 4y(8y6) 2y(4y8s)(2sy) 3(8t3)4t 9(8x7)(8x3) 6(ab2
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