1、初一数学上册计算题专项训练56 4 5 ()()(5) 19(2)3(4) 7 7 2 1 6 ( )( ) 12(30)1(18) 3 4 5 1 (0.8)(500) (4)412 (1)2308 2 1 1 1 ()()0 25(1)3(3 2 5 3 1 1 1 ( )( ) 3(18)6(18) 5 5 4 5 5 ( )(70) (3)313 (1)2374 6 4 (8)(6) 11(12) 14.5(14) 1 1 ()() 71(128) (3)454 2 3 224(9)(4) 6.4(10)(2)6.1 2 1 1 3 6 6 ()() 2.4()(6.5) 7 9 3
2、7 5 5 (8x8) z6(39b) 8x3(9n4t) (4xn)8(5x3b) 5 (128z)t 8(2a6mn2) 4 1 1 (xy)(ef) 2(7ax)7(m8p) 8 6 8n(6n9) 4n(8n3q)(3qn) 8(2t7)5t 4(3y2)(2y7) 8(ab9a)(3a4b) 6(abc5a)9(6a2abc) 8(xy9z)(xy4z) 5(pqpr)(8pqpr) 7 x 1 x 0.9x0.38.80.2x 6 4 9 4 1 9x9x 3(x9)5(x6)15 3 2 1 2 (9x7)x9 4x2(13x)5 5 5 y3 y3 7 0.5x9.5(x4)5
3、0 2 5 0.5x0.47.38.5x 3(4x7)17 3 4 ()()(4) 2(2)3(1) 7 7 2 1 1 ( )( ) 18(13)6(11) 3 6 9 1 (0.5)(100) (3)213 (1)2235 3 1 1 1 ()()0 27(4)3(5 4 2 3 1 7 1 ( )( ) 2(21)2(12) 6 8 5 5 7 ( )(80) (2)222 (1)1448 6 6 (1)(3) 20(7) 11(17) 1 1 ()() 202(36) (0)243 8 8 286(2)(16) 5.6(6)(1.2)9.6 2 1 1 2 8 8 ()() 4.5()
4、(7.8) 3 2 2 5 5 5 (8b9) x9(24a) 13x9(9b4c) (7xb)3(6b8a) 10 (1010x)c 5(4a2mn2) 9 1 1 (bc)(st) 3(7ax)4(m6q) 4 6 4a(2a8) a(9a6d)(5da) 7(9b10)4b 10(6x6)(7x4) 5(ab7a)(7a3b) 8(abc9a)4(2a2abc) 3(xy9z)(xy8z) 9(pqpr)(2pqpr) 7 x 1 x 0.5x0.54.30.1x 3 2 6 4 1 2x5x 4(x8)8(x7)12 9 8 1 1 (5x7)x3 6x7(4x)7 4 5 y2 y1
5、 6 2x5.5(x3)50 2 6 0.2x0.35.19.8x 2(7x5)18 5 1 ()()(6) 27(3)3(1) 7 7 5 1 1 ( )( ) 18(11)8(18) 4 6 9 1 (0.4)(1) (2)243 (1)1162 7 1 1 1 ()()0 2(2)2(5 9 2 2 1 1 5 ( )( ) 10(16)3(19) 4 5 6 1 1 ( )(70) (2)433 (1)2412 3 8 (5)(5) 9(7) 2.5(4) 1 1 ()() 62(157) (1)422 8 3 315(20)(5) 4.7(7.6)(3)6.8 2 1 1 3 9 8
6、 ()() 3.2()(6.9) 3 3 2 7 5 5 (6n5) y8(48b) 9x2(3b6z) (2xb)6(2n5b) 1 (126y)z 8(3d2ab2) 3 1 1 (yz)(pq) 4(8bx)4(n2q) 3 4 2n(5n5) n(6n3d)(7d5n) 8(3n10)6n 6(6x1)(4x9) 8(ab8a)(8a4b) 9(abc5a)7(6a6abc) 4(xy6z)(xy5z) 9(pqpr)(6pqpr) 7 x 1 x 0.4x0.517.8x 6 2 6 8 1 4x7x 9(x6)4(x6)8 5 2 1 3 (6x9)x8 8x7(14x)2 2 5
7、 y1 y2 2 2x5(x6)10 2 6 0.6x0.50.24.8x 2(4x1)6 6 2 ()()(7) 1(1)2(4) 7 7 9 1 8 ( )( ) 12(17)9(20) 8 6 9 1 (0.3)(80) (3)233 (1)1593 8 1 1 1 ()()0 13(4)2(4 4 2 3 1 1 7 ( )( ) 24(25)4(16) 8 8 6 8 1 ( )(40) (1)212 (1)2121 7 6 (1)(19) 6(1) 7.5(17) 1 1 ()() 192(133) (4)344 3 3 3012(28)(3) 4.2(8.5)(4.9)10 2
8、1 1 1 6 8 ()() 9.7()(2.3) 7 2 6 7 5 5 (3m2) x6(27c) 17x2(8y2c) (4xy)8(4m4c) 1 (128x)c 3(3d4ab7) 6 1 1 (xy)(mn) 5(6ay)7(n3q) 2 8 9n(8n7) 8n(9n9q)(6q5n) 3(8t9)2t 10(5x10)(3x3) 2(ab5a)(9a5b) 5(abc2a)8(2a2abc) 5(xy6z)(xy6z) 4(pqpr)(5pqpr) 5 x 1 x 0.5x0.67.28x 3 2 6 4 1 8x5x 4(x9)9(x9)17 5 4 1 1 (2x9)x7
9、2x7(6x)6 2 5 y2 y1 3 5x3.5(x6)10 3 5 0.5x0.50.91.6x 4(8x7)15 4 3 ()()(3) 6(4)2(5) 7 7 1 1 6 ( )( ) 17(16)7(10) 8 4 7 1 (0.6)(80) (3)212 (1)1490 8 1 1 1 ()()0 7(4)3(2 2 7 4 1 1 1 ( )( ) 9(19)10(17) 6 6 7 6 4 ( )(90) (4)343 (1)1451 5 3 (8)(16) 9(1) 11(24) 1 1 ()() 63(35) (0)332 4 8 03(6)(26) 8.8(2.7)(
10、4.2)9 2 1 1 3 8 4 ()() 8.3()(2.7) 9 3 3 5 5 5 (4m2) y9(22a) 14x6(4n2z) (6xn)5(5m6a) 8 (2010y)z 4(6c3ab9) 7 1 1 (bc)(ef) 3(6ax)9(m7p) 2 4 4a(6a8) a(2a5c)(9c8a) 3(7t7)8t 2(6b2)(2b1) 4(ab6a)(4a3b) 17(abc9a)6(5a2abc) 7(xy4z)(xy3z) 9(pqpr)(9pqpr) 5 x 1 x 0.1x0.36.36.1x 3 6 6 8 1 7x1x 8(x5)2(x3)20 7 9 1 2 (9x6)x4 8x5(12x)7 6 5 y2 y2 6 4x8(x3)30 3 6 0.2x0.73.49.6x 4(5x4)1
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