1、初一数学上册计算训练营28 3 4 ()()(9) 24(3)2(2) 7 7 8 1 8 ( )( ) 8(29)7(17) 9 6 9 1 (0.7)(80) (1)452 (1)1744 4 1 1 1 ()()0 26(3)3(3 3 9 9 1 2 9 ( )( ) 21(26)2(11) 5 3 8 1 1 ( )(60) (2)422 (1)1472 4 7 (13)(5) 1(14) 12(1) 1 1 ()() 121(144) (0)222 7 6 2420(7)(30) 4.3(8.4)(0.8)2.8 2 1 1 2 4 2 ()() 4.9()(7.9) 5 2 5
2、5 5 5 (8x5) x4(78a) 13m9(5n3c) (8mn)5(8x8a) 1 (106x)c 2(2c5ab4) 2 1 1 (ab)(pq) 4(7ax)6(m4p) 7 7 3m(3m1) m(9m2s)(4sm) 2(7b6)9b 9(6b8)(2b3) 9(ab4a)(6a8b) 13(abc8a)8(8a6abc) 6(xy5z)(xy7z) 9(pqpr)(4pqpr) 7 x 1 x 0.8x0.28.43.4x 6 8 3 2 1 4x7x 7(x3)9(x9)12 9 4 1 2 (7x1)x9 6x5(14x)7 8 5 y2 y1 4 4.5x1.5(x2)
3、15 4 5 0.1x0.71.43.5x 9(6x8)2 4 5 ()()(6) 16(1)2(5) 7 7 1 1 4 ( )( ) 12(22)9(11) 5 8 3 1 (0.7)(40) (1)313 (1)1943 6 1 1 1 ()()0 14(3)2(2 7 5 5 1 1 3 ( )( ) 20(29)8(19) 8 3 2 1 1 ( )(90) (4)342 (1)2697 7 3 (4)(1) 1(5) 8.5(7.5) 1 1 ()() 204(205) (2)424 4 5 199(21)(9) 4.1(3.1)(1.3)8.5 2 1 1 3 8 4 ()()
4、4.5()(3.4) 7 7 3 7 5 5 (5x7) x9(53b) 4m8(4b3c) (3mb)5(2x6b) 1 (102x)c 6(9d5mn8) 3 1 1 (ab)(mn) 5(8ay)9(n6q) 3 2 8n(7n1) 2n(9n8z)(9zn) 3(3n2)7n 3(3b4)(4b6) 4(ab7a)(5a9b) 13(abc7a)8(6a7abc) 5(xy2z)(xy6z) 6(pqpr)(6pqpr) 5 x 1 x 0.1x0.11.33.2x 6 4 3 4 1 2x2x 5(x1)5(x8)8 9 6 1 4 (9x1)x2 6x4(7x)6 5 5 y3 y
5、3 3 0.5x6.5(x7)30 2 6 0.8x0.45.33.9x 8(8x6)13 4 3 ()()(7) 7(2)3(2) 7 7 3 1 8 ( )( ) 10(12)10(15) 2 4 7 1 (0.7)(8) (5)442 (1)2676 6 1 1 1 ()()0 13(3)3(4 7 6 2 1 1 1 ( )( ) 5(28)9(10) 5 6 7 7 6 ( )(60) (3)332 (1)1968 8 7 (16)(8) 3(17) 11.5(10) 1 1 ()() 115(88) (2)212 6 4 1012(23)(10) 7.9(0.3)(2.5)7.8
6、2 1 1 3 9 7 ()() 1.6()(2.6) 3 8 4 7 5 5 (8m3) y3(19c) 12a6(9n3z) (6an)8(9m9c) 8 (2010y)z 5(3a4ab5) 9 1 1 (yz)(st) 5(7bx)4(n7p) 6 2 5m(3m5) m(8m9z)(5zm) 3(8b5)2b 9(2a9)(8a7) 8(ab7a)(6a9b) 12(abc3a)8(6a5abc) 4(xy9z)(xy8z) 9(pqpr)(8pqpr) 5 x 1 x 0.2x0.73.78.9x 3 8 3 4 1 8x6x 6(x7)7(x3)11 5 3 1 1 (4x5)x
7、8 6x3(20x)5 6 5 y2 y3 8 3.5x4(x3)50 3 5 0.2x0.17.12.1x 4(2x1)10 4 2 ()()(5) 29(1)2(1) 7 7 3 1 8 ( )( ) 29(29)1(16) 4 4 9 1 (0.8)(700) (4)233 (1)2385 8 1 1 1 ()()0 3(3)3(4 6 8 9 1 1 6 ( )( ) 3(23)3(18) 4 5 7 1 1 ( )(60) (1)353 (1)1655 8 6 (12)(11) 1(3) 14(1.5) 1 1 ()() 33(207) (2)212 5 3 158(12)(24)
8、8.9(1.2)(3.4)9.9 2 1 1 1 9 4 ()() 3.4()(9.2) 7 2 6 5 5 5 (9y5) y3(72a) 17x9(4y2t) (3xy)3(3y8a) 1 (610y)t 7(4d6ab8) 7 1 1 (yz)(mn) 5(8by)2(m5q) 7 7 8b(6b7) b(4b4c)(6c8b) 6(2n6)4n 9(5n5)(2n7) 5(ab7a)(7a6b) 16(abc7a)6(6a8abc) 4(xy2z)(xy8z) 4(pqpr)(5pqpr) 7 x 1 x 0.9x0.98.47x 9 6 3 8 1 3x4x 2(x8)3(x8)8
9、7 2 1 3 (9x6)x3 6x4(19x)7 2 5 y3 y3 2 2x2(x4)20 3 6 0.4x0.35.33.4x 4(7x3)18 4 4 ()()(1) 25(3)2(2) 7 7 1 1 1 ( )( ) 13(21)6(12) 5 2 5 1 (0.5)(6) (4)243 (1)1528 2 1 1 1 ()()0 15(4)2(5 5 5 9 1 2 6 ( )( ) 18(17)2(20) 5 3 7 1 5 ( )(100) (3)312 (1)1090 7 4 (9)(17) 6(5) 2.5(21.5) 1 1 ()() 54(32) (3)243 8 3
10、 219(21)(25) 2(6.3)(4.2)1.8 2 1 1 2 1 6 ()() 4.5()(3.7) 3 3 3 5 5 5 (7m2) x6(67a) 12m4(6n9c) (7mn)6(3m5a) 7 (124x)c 3(3d2xy6) 8 1 1 (ab)(mn) 3(8ay)5(m3p) 9 6 4y(3y1) 9y(4y6c)(8cy) 7(8a5)8a 9(6b1)(4b3) 7(ab5a)(5a7b) 10(abc9a)2(6a3abc) 2(xy5z)(xy5z) 5(pqpr)(7pqpr) 7 x 1 x 0.6x0.13.39.6x 3 2 3 4 1 7x7x 8(x5)8(x6)20 5 5 1 4 (7x9)x2 4x9(14x)6 2 5 y3 y3 7 2.5x0.5(x9)35 4 6 0.2x0.88.37.2x 6(5x3)12
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