1、七年级数学上册计算题天天练38 1 3 (4x3)x9 2x2(18x)6 3 5 y3 y3 7 0.5x2.5(x6)35 4 5 1 2 (23x)(4x3) 6(7x7)4 5 3 5 6 ()()(6) 10(2)2(4) 7 7 7 1 1 ( )( ) 11(28)4(19) 6 8 5 1 (0.8)(5) (4)352 (1)1244 7 1 1 1 ()()0 3(4)2(4 5 3 7 1 1 1 ( )( ) 7(25)9(20) 8 6 5 1 1 ( )(50) (1)232 (1)2984 8 6 (18)(20) 11(9) 5(9) 1 1 ()() 13(7
2、7) (4)233 4 2 1114(27)(24) 7.5(7)(3.1)7.5 2 1 1 4 7 1 ()() 5.4()(8.4) 7 2 3 7 5 5 (2m9) z4(87a) 8a3(4n6z) (8an)8(3m9a) 8 (84z)z 4(6c4ab9) 9 1 1 (yz)(ef) 4(8ax)2(m7q) 8 6 7a(2a7) 7a(3a8d)(9da) 7(8m9)8m 8(7b1)(3b1) 4(ab6a)(6a7b) 9(abc8a)6(6a4abc) 4(xy3z)(xy7z) 2(pqpr)(6pqpr) 5 x 1 x 0.5x0.20.69.6x 9 8
3、 6 4 1 3x4x 4(x8)9(x5)7 5 9 1 2 (3x4)x7 8x9(20x)3 4 5 y1 y1 8 1.5x5.5(x2)50 3 6 1 2 (32x)(4x5) 2(5x8)4 9 3 6 5 ()()(5) 11(3)3(3) 7 7 1 1 1 ( )( ) 9(29)3(19) 7 4 7 1 (0.2)(900) (4)353 (1)1809 7 1 1 1 ()()0 7(4)2(3 5 3 6 1 7 9 ( )( ) 3(26)5(20) 5 8 8 7 4 ( )(90) (3)353 (1)1039 6 5 (7)(10) 8(5) 9.5(3)
4、1 1 ()() 82(64) (4)344 9 7 105(15)(10) 5.4(9.5)(0.5)2.5 2 1 1 2 9 2 ()() 1.2()(1.3) 9 7 7 7 5 5 (3m1) x4(15b) 7x9(6y8t) (4xy)9(6m3b) 8 (204x)t 7(2c3bc1) 7 1 1 (bc)(ef) 5(8ax)2(n8p) 9 6 6a(2a8) a(7a8s)(9s6a) 6(4m2)8m 5(2a2)(3a1) 9(ab2a)(4a3b) 17(abc6a)7(3a6abc) 7(xy5z)(xy3z) 3(pqpr)(5pqpr) 5 x 1 x 0.
5、4x0.67.98.5x 9 2 6 8 1 4x5x 9(x3)3(x6)8 7 4 1 4 (2x2)x9 2x3(7x)4 3 5 y1 y3 5 0.5x7(x5)15 3 6 1 2 (54x)(3x4) 8(4x6)19 6 7 1 6 ()()(7) 22(1)3(4) 7 7 9 1 4 ( )( ) 6(21)8(10) 8 6 3 1 (0.9)(3) (3)233 (1)1566 5 1 1 1 ()()0 7(3)3(5 9 9 6 1 6 6 ( )( ) 9(27)5(14) 5 7 5 1 5 ( )(10) (5)452 (1)1606 2 6 (17)(15)
6、 16(9) 4(6) 1 1 ()() 21(12) (3)432 9 4 110(13)(21) 2.6(1.9)(0.5)8.7 2 1 1 4 2 1 ()() 7.9()(8.1) 9 8 8 5 5 5 (5x8) y6(46c) 4m6(3b7c) (4mb)5(8x8c) 4 (210y)c 3(5a7mn2) 3 1 1 (bc)(pq) 4(9ax)5(n8q) 2 5 3x(8x2) 6x(6x4c)(2cx) 2(4a5)4a 10(4a2)(5a10) 7(ab7a)(2a2b) 18(abc6a)5(3a5abc) 2(xy6z)(xy4z) 3(pqpr)(5pq
7、pr) 5 x 1 x 0.8x0.33.34.2x 9 4 3 8 1 7x6x 7(x7)7(x5)19 9 6 1 1 (7x8)x6 2x7(10x)5 4 5 y3 y2 7 4.5x5.5(x7)15 3 6 1 2 (12x)(2x3) 4(3x9)2 7 5 4 6 ()()(7) 20(1)2(5) 7 7 1 1 8 ( )( ) 19(29)4(10) 9 6 7 1 (0.2)(5) (3)353 (1)1462 9 1 1 1 ()()0 21(4)2(1 3 9 8 1 3 6 ( )( ) 12(22)8(10) 8 4 7 1 1 ( )(100) (2)332
8、 (1)2781 5 2 (3)(18) 5(8) 4(6.5) 1 1 ()() 192(209) (2)252 3 5 258(23)(6) 9.8(6.2)(2.7)2.3 2 1 1 3 2 4 ()() 5.4()(4.2) 7 9 7 5 5 5 (4n8) z7(19c) 19x4(9b9z) (3xb)7(7n8c) 4 (164z)z 2(6c6bc9) 3 1 1 (ab)(pq) 4(7by)7(n9p) 4 3 2n(5n3) n(6n8z)(9z9n) 9(2b5)6b 4(8b9)(4b7) 2(ab4a)(9a7b) 17(abc8a)2(9a9abc) 9(xy
9、9z)(xy6z) 8(pqpr)(8pqpr) 7 x 1 x 0.3x0.78.52.5x 9 6 6 8 1 7x6x 8(x9)2(x4)2 3 4 1 4 (5x9)x7 2x2(1x)4 9 5 y2 y1 4 5x6.5(x6)15 2 5 1 2 (44x)(2x3) 7(9x4)18 4 7 1 5 ()()(2) 11(3)3(2) 7 7 1 1 6 ( )( ) 18(10)5(17) 2 2 5 1 (0.9)(60) (5)242 (1)2310 5 1 1 1 ()()0 9(4)2(1 7 5 9 1 1 6 ( )( ) 27(15)2(20) 5 4 7 4
10、 1 ( )(80) (5)233 (1)1075 5 3 (6)(6) 10(20) 7(11) 1 1 ()() 74(112) (0)312 6 8 302(11)(10) 3.4(6.1)(0.2)0.7 2 1 1 3 4 3 ()() 6.6()(4.4) 7 6 8 5 5 5 (2b1) y4(85b) 18m3(4b3z) (8mb)4(7b3b) 8 (148y)z 4(8a8ab4) 7 1 1 (bc)(ef) 5(9bx)7(n3p) 3 6 8x(6x1) 4x(7x4d)(3d7x) 3(4b4)2b 7(3m10)(5m6) 2(ab2a)(5a5b) 9(ab
11、c5a)7(4a8abc) 9(xy5z)(xy2z) 4(pqpr)(9pqpr) 5 x 1 x 0.6x0.76.83.3x 9 4 6 4 1 4x4x 6(x6)6(x2)6 3 3 1 4 (6x8)x1 8x3(14x)3 2 5 y3 y2 2 3.5x7(x6)20 4 5 1 2 (22x)(2x1) 4(2x5)8 2 9 3 5 ()()(1) 28(1)3(4) 7 7 7 1 1 ( )( ) 30(21)5(17) 8 2 7 1 (0.6)(3) (5)313 (1)1612 5 1 1 1 ()()0 21(3)2(2 6 8 3 1 6 1 ( )( ) 1(15)5(15) 4 7 8 1 7 ( )(100) (1)422 (1)2521 8 8