1、初一数学上册有理数混合运算题精选68(7)(20) 9(19) 0.5(7) 1 1 () () (1)16(4) 7 7 1 () 18 (16)142.5 2 6 8 ( )( )(5) -1(1318) 5 7 1 (12) 3(8.3)0(45.5) 10 (9)(17) 2(11) 0.5(18) 1 1 () () (8)12(2) 4 3 1 () 4 (16)165 4 1 9 ( )( )(3) 0(1739) 2 8 3 (14) 10.5(7.2)0(92.2) 2 (8)(10) 3(6) 0.5(8) 1 1 () () (8)2(3.25) 8 3 1 () 16
2、(20)160.125 3 9 7 ( )( )(10) 0(2382) 8 6 17 (16) 11.5(8.6)0(44.6) 18 (2)(20) 1(3) 1.5(10) 1 1 () () (4)2(5) 8 4 1 () 6 (12)140.125 4 1 3 ( )( )(9) 1(2613) 5 2 1 (20) 7(5.7)0(47.3) 14 (7)(14) 2(8) 4.5(18) 1 1 () () (1)14(2) 7 2 1 () 8 (4)1225 5 9 1 ( )( )(5) -1(2941) 8 5 1 (20) 12(4.2)0(37.8) 12 (7)(
3、16) 4(1) 9(19) 1 1 () () (3)16(1.75) 5 5 1 () 8 (20)160.05 3 1 1 ( )( )(10) -1(2945) 6 4 19 (12) 4(0.9)0(62.8) 20 (4)(4) 1(8) 10(16) 1 1 () () (9)14(1.5) 2 3 1 () 10 (16)450 4 1 1 ( )( )(8) -1(1736) 2 8 11 (20) 17.5(6.9)0(35.9) 10 (7)(2) 2(3) 0.5(19) 1 1 () () (8)4(3.5) 8 4 1 () 4 (12)16125 7 7 1 (
4、)( )(10) 0(2223) 6 2 1 (18) 13(6.1)0(94.8) 10 (8)(19) 8(8) 4(16) 1 1 () () (3)20(5) 4 8 1 () 6 (12)201.25 6 7 4 ( )( )(9) 0(2691) 6 3 1 (10) 0.5(8.9)0(48) 2 (2)(4) 7(20) 1.5(18) 1 1 () () (9)8(4.75) 6 8 1 () 6 (8)80.05 7 1 1 ( )( )(2) -1(1541) 5 4 1 (6) 18(4.5)0(58.8) 8 (8)(20) 1(9) 6.5(11) 1 1 () (
5、) (6)2(3) 5 5 1 () 8 (12)65 2 1 1 ( )( )(8) -1(2038) 8 6 15 (12) 5(1.5)0(58.3) 14 (7)(14) 10(14) 2.5(20) 1 1 () () (6)20(2.5) 5 8 1 () 20 (16)1850 5 1 3 ( )( )(3) -1(1262) 5 2 5 (20) 16.5(5.9)0(53.3) 6 (4)(18) 6(8) 5(12) 1 1 () () (7)8(5) 2 4 1 () 8 (8)80.5 5 8 1 ( )( )(2) -1(2341) 7 5 7 (6) 18(9.9)
6、0(94.3) 6 (2)(5) 1(20) 6.5(10) 1 1 () () (8)18(5) 8 2 1 () 6 (20)60.125 3 1 9 ( )( )(5) 0(1777) 2 8 19 (4) 18(9.7)0(94.8) 18 (7)(15) 5(14) 9(6) 1 1 () () (2)18(4) 6 9 1 () 18 (16)180.125 3 7 4 ( )( )(9) 1(1735) 6 3 1 (16) 8.5(3.7)0(96.5) 18 (2)(9) 7(7) 7(3) 1 1 () () (10)2(3.5) 3 7 1 () 14 (20)1412.
7、5 6 4 1 ( )( )(3) 0(1838) 3 2 17 (12) 1(5.9)0(89.3) 16 (5)(20) 3(12) 5.5(11) 1 1 () () (2)4(4.25) 4 7 1 () 16 (8)180.25 3 5 5 ( )( )(4) 1(2953) 4 4 1 (2) 17(0.6)0(81.6) 20 (1)(13) 2(5) 2.5(8) 1 1 () () (3)12(4.25) 5 5 1 () 20 (20)200.125 4 4 1 ( )( )(8) 1(2423) 3 8 1 (20) 12(6.4)0(44.8) 4 (2)(16) 6(1) 7(20) 1 1 () () (10)6(3) 5 6 1 () 12 (12)20.125 2 1 7 ( )( )(2) -1(1936) 3 6 17 (8) 15(6.8)0(81.9) 16 (4)(5) 1(6) 4(15) 1 1 () () (10)10(1.25) 3 8 1 () 20 (4)60.05 4 3 1 ( )( )(4) 0(1827) 2 2 7 (16) 0.5(8.7)0(44.2) 8
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