初一数学上册计算训练营40.docx

1、初一数学上册计算训练营40 5 3 ()()(10) 12(3)3(5) 7 7 6 1 1 ( )( ） 17(13)2(15) 5 6 3 1 (0.1)(5) (3)313 (1)1118 7 1 1 1 ()()0 30(1)2(3 5 3 4 1 1 1 ( )( ) 28(22)3(18) 5 4 2 1 6 ( )(50) (4)322 (1)2686 4 5 (18)(14) 4(13) 9.5(24) 1 1 ()() 102(182) (3)442 2 8 1516(16)(8) 5.9(8.6)(0.4)6.3 2 1 1 3 1 3 ()() 2.3()(4.1) 9

2、8 8 5 5 5 (3n9) y3(42c) 6x8(8y5c) (2xy)2(8n8c) 7 (128y)c 2(4c4xy5) 8 1 1 (bc)(st) 2(6by)8(n5p) 2 3 6x(3x6) 5x(3x2d)(9dx) 3(6n1)9n 2(2b8)(8b8) 4(ab8a)(8a5b) 20(abc5a)7(8a8abc) 6(xy3z)(xy6z) 2(pqpr)(5pqpr) 5 x 1 x 0.4x0.42.21.1x 3 6 6 8 1 3x5x 9(x1)2(x9)14 3 8 1 4 (6x3)x6 7x7(10x)6 4 5 y3 y3 1 1.5x3.5

3、(x6)10 4 6 0.1x0.42.74.8x 9(9x3)15 5 5 ()()(7) 14(1)3(3) 7 7 3 1 10 ( )( ） 18(20)4(18) 4 4 9 1 (0.5)(20) (2)413 (1)2033 7 1 1 1 ()()0 15(3)2(3 6 5 6 1 6 1 ( )( ) 15(27)5(20) 4 7 5 1 1 ( )(20) (3)432 (1)2407 3 4 (10)(5) 2(2) 2.5(24.5) 1 1 ()() 182(82) (3)214 6 7 142(24)(11) 9.6(0.2)(0.3)7.4 2 1 1 2 1

4、 1 ()() 6.6()(4.5) 7 4 9 5 5 5 (5n4) z4(77a) 10m6(3y6z) (8my)4(6n2a) 4 (186z)z 7(7c4xy8) 3 1 1 (bc)(ef) 4(7bx)2(m9p) 5 9 8x(2x8) x(8x9c)(4cx) 9(2s6)3s 7(7y1)(5y4) 3(ab3a)(8a2b) 12(abc9a)3(7a4abc) 9(xy7z)(xy7z) 3(pqpr)(8pqpr) 5 x 1 x 0.6x0.25.80.1x 6 4 3 2 1 4x2x 4(x5)5(x5)20 3 3 1 1 (2x2)x1 2x8(20x)

5、2 2 5 y2 y2 4 4x1.5(x8)35 4 6 0.2x0.90.79.7x 8(7x4)19 6 4 ()()(2) 21(2)3(2) 7 7 1 1 10 ( )( ） 17(29)6(18) 3 8 9 1 (0.8)(3) (3)452 (1)2771 5 1 1 1 ()()0 28(3)2(5 2 2 9 1 6 3 ( )( ) 19(22)1(13) 2 5 2 1 1 ( )(20) (3)442 (1)2488 6 8 (13)(20) 18(15) 4.5(1) 1 1 ()() 183(1510) (3)332 8 9 407(5)(28) 4.8(3.7

6、)(3.1)9.7 2 1 1 2 1 2 ()() 5.6()(6.6) 9 4 5 5 5 5 (4x9) z5(58b) 16m4(3n2c) (7mn)2(6x8b) 1 (44z)c 4(7a5xy7) 6 1 1 (ab)(mn) 3(6by)8(n9p) 4 2 8m(6m1) 2m(7m6z)(5z4m) 7(6a7)4a 8(3m4)(2m4) 3(ab6a)(5a9b) 16(abc8a)2(7a6abc) 9(xy3z)(xy7z) 3(pqpr)(2pqpr) 5 x 1 x 0.7x0.138.4x 9 4 9 4 1 7x3x 9(x5)7(x6)18 9 9 1

7、4 (9x7)x2 5x5(15x)3 2 5 y3 y1 4 2.5x8.5(x3)10 4 6 0.7x0.63.83.5x 7(6x4)2 4 6 ()()(2) 3(2)3(4) 7 7 1 1 1 ( )( ） 22(27)4(15) 2 8 7 1 (0.9)(1000) (3)343 (1)2730 7 1 1 1 ()()0 5(4)2(4 2 8 3 1 6 1 ( )( ) 12(11)5(11) 5 5 2 5 1 ( )(10) (3)312 (1)2632 6 5 (15)(15) 0(6) 15(5) 1 1 ()() 91(104) (3)454 8 5 2813

8、(25)(20) 8.3(10)(2.6)9.2 2 1 1 1 3 9 ()() 7.2()(2.9) 7 2 9 7 5 5 (8b9) z6(14a) 15a5(3y8c) (5ay)9(8b4a) 8 (68z)c 8(9b4mn3) 7 1 1 (yz)(ef) 4(9ay)3(m6p) 5 2 9b(6b4) b(3b9s)(2s3b) 9(8s6)6s 2(7y7)(2y1) 7(ab9a)(7a7b) 9(abc4a)8(8a7abc) 7(xy5z)(xy3z) 6(pqpr)(9pqpr) 7 x 1 x 0.2x0.65.50.6x 9 4 3 2 1 2x2x 2(x4

9、)3(x5)3 9 4 1 2 (7x6)x1 3x3(6x)2 6 5 y1 y1 5 4.5x9(x4)5 3 5 0.6x0.95.71.8x 3(9x7)19 2 3 ()()(2) 15(3)2(3) 7 7 9 1 10 ( )( ） 12(29)2(20) 8 8 9 1 (0.7)(90) (2)322 (1)1019 8 1 1 1 ()()0 21(1)3(5 6 9 4 1 6 7 ( )( ) 16(11)9(11) 2 5 8 1 6 ( )(80) (1)433 (1)2359 5 7 (3)(18) 13(3) 7(20) 1 1 ()() 201(64) (5)

10、233 9 2 235(11)(23) 2(7.9)(2.2)7.8 2 1 1 2 7 3 ()() 2.4()(1.3) 7 3 3 7 5 5 (9a2) y6(23c) 4a2(9n7t) (9an)8(9a6c) 1 (162y)t 2(4b4xy6) 4 1 1 (yz)(pq) 3(7ay)7(n6p) 3 5 8x(9x6) x(5x3s)(8sx) 7(6a2)2a 9(3m4)(2m8) 7(ab9a)(2a2b) 17(abc6a)9(2a7abc) 9(xy7z)(xy9z) 5(pqpr)(2pqpr) 5 x 1 x 0.5x0.32.67.4x 3 6 3 4 1 5x4x 6(x5)5(x7)8 7 5 1 2 (6x4)x9 9x6(3x)3 5 5 y3 y2 2 3.5x6.5(x1)5 4 6 0.7x0.64.42.4x 2(6x3)3