1、初一数学上册计算训练营12 1 2 ()()(1) 24(3)3(4) 7 7 1 1 1 ( )( ) 22(27)1(19) 3 6 7 1 (0.8)(100) (5)352 (1)2664 3 1 1 1 ()()0 10(2)2(2 9 3 8 1 1 1 ( )( ) 22(17)9(13) 2 5 4 5 1 ( )(10) (1)312 (1)2847 6 2 (19)(8) 5(12) 8.5(10.5) 1 1 ()() 161(41) (4)313 7 8 1413(23)(5) 1.5(1.9)(3.6)1.7 2 1 1 3 6 6 ()() 3.6()(7.6) 7
2、 3 6 5 5 5 (3n1) y3(98b) 7a2(5b8t) (8ab)9(5n4b) 1 (62y)t 9(4d9bc5) 6 1 1 (ab)(st) 5(8ay)3(m4q) 5 2 6y(8y3) y(4y7q)(2q3y) 5(8b10)4b 8(8x1)(7x4) 6(ab5a)(3a8b) 17(abc4a)7(5a9abc) 5(xy5z)(xy8z) 3(pqpr)(7pqpr) 5 x 1 x 0.9x0.92.51.1x 3 8 9 8 1 5x4x 8(x6)9(x7)14 7 3 1 3 (7x8)x7 7x9(7x)2 7 5 y1 y1 5 1.5x6.5
3、(x4)20 3 5 0.2x0.12.17.4x 5(3x2)6 6 3 ()()(6) 20(2)3(1) 7 7 1 1 1 ( )( ) 5(21)8(19) 8 2 9 1 (0.5)(200) (1)322 (1)2150 5 1 1 1 ()()0 25(3)3(1 3 7 3 1 1 1 ( )( ) 18(16)9(12) 8 2 2 1 1 ( )(30) (3)213 (1)2718 5 6 (7)(11) 11(10) 12(22) 1 1 ()() 144(23) (1)223 9 7 48(24)(9) 1.9(5.2)(4.7)7.7 2 1 1 3 6 6 ()
4、() 4.2()(9.3) 5 3 4 5 5 5 (4y4) x6(46b) 12a4(3b4z) (6ab)8(2y2b) 1 (166x)z 8(2b7bc7) 7 1 1 (ab)(mn) 3(9by)7(m4q) 5 5 4y(4y8) 9y(8y2q)(7q6y) 9(3t8)5t 8(6y1)(2y9) 7(ab5a)(9a3b) 7(abc9a)6(9a2abc) 8(xy9z)(xy2z) 6(pqpr)(6pqpr) 7 x 1 x 0.9x0.55.47.7x 9 2 3 4 1 7x8x 4(x8)6(x8)17 9 6 1 2 (9x8)x3 9x7(1x)5 7 5
5、 y2 y3 5 1.5x5.5(x5)35 2 6 0.1x0.63.74.5x 3(4x2)20 5 1 ()()(9) 26(2)3(1) 7 7 2 1 6 ( )( ) 23(24)10(13) 3 4 5 1 (0.2)(50) (5)232 (1)1800 9 1 1 1 ()()0 30(4)3(5 8 2 8 1 1 1 ( )( ) 3(20)3(16) 2 7 2 1 1 ( )(50) (2)313 (1)2181 8 2 (11)(3) 12(17) 3.5(11) 1 1 ()() 144(129) (3)433 3 9 329(4)(14) 5.9(0.8)(4)
6、9.1 2 1 1 3 2 1 ()() 3.3()(7.8) 7 7 6 5 5 5 (2n8) x8(82a) 4m6(2b8z) (4mb)6(6n4a) 1 (184x)z 9(5b6mn7) 8 1 1 (bc)(pq) 2(7ax)6(n5q) 6 9 6n(2n6) n(2n8z)(8z6n) 9(4t1)5t 1(6n5)(6n2) 4(ab6a)(9a6b) 19(abc8a)9(5a8abc) 9(xy8z)(xy2z) 8(pqpr)(6pqpr) 5 x 1 x 0.2x0.49.65.8x 9 8 6 4 1 2x7x 8(x8)3(x6)20 7 5 1 1 (3x
7、9)x8 7x8(9x)6 6 5 y2 y2 1 2.5x2(x6)25 4 6 0.2x0.995x 4(9x9)12 3 2 ()()(5) 5(3)3(1) 7 7 1 1 4 ( )( ) 1(21)2(16) 3 6 3 1 (0.9)(5) (5)243 (1)2554 9 1 1 1 ()()0 24(3)3(5 6 4 7 1 7 6 ( )( ) 28(27)8(19) 8 6 5 4 1 ( )(20) (5)352 (1)1663 3 3 (4)(17) 6(14) 4.5(24.5) 1 1 ()() 73(45) (4)434 9 5 204(2)(3) 9.9(6.6)(1.4)1.1 2 1 1 1 2 9 ()() 5.7()(8.1) 7 7 9 7 5 5 (9a8) z6(19a) 16x5(4y2c) (4xy)9(5a2a) 1 (48z)c 7(3b8bc4) 9 1 1 (bc)(ef) 4(7ax)8(n5p) 4 6 7a(8a7) a(9a6c)(9ca) 6(9a4)8a 2(9y7)(2y3) 9(ab
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