1、初一数学上册有理数的混合运算专项练习题122 3 1 ()()(7) 2(3)2(5) 7 7 3 1 8 ( )( ) 24(11)8(17) 4 2 7 1 (0.2)(20) (3)233 (1)2551 4 1 1 1 ()()0 16(1)2(5 3 8 6 1 1 4 ( )( ) 27(11)3(15) 3 4 5 8 1 ( )(40) (2)253 (1)1420 7 4 (2)(18) 7(10) 3(18.5) 1 1 ()() 85(31) (1)222 9 6 516(29)(15) 1.2(8.4)(0.1)4.1 2 1 1 2 3 2 ()() 3.9()(9.
2、8) 5 2 9 7 5 5 4 3 ()()(5) 29(2)2(5) 7 7 8 1 2 ( )( ) 30(10)5(11) 9 4 3 1 (0.6)(800) (1)212 (1)1385 6 1 1 1 ()()0 22(1)2(3 2 8 2 1 1 1 ( )( ) 10(26)1(14) 7 3 5 4 1 ( )(20) (3)213 (1)1629 5 4 (20)(2) 3(2) 14.5(5) 1 1 ()() 171(113) (5)433 4 4 1110(2)(26) 0.5(2.1)(3.1)3.6 2 1 1 1 1 7 ()() 7.1()(3.1) 3
3、9 9 7 5 5 6 5 ()()(8) 10(3)3(1) 7 7 1 1 10 ( )( ) 16(18)9(18) 4 4 9 1 (0.5)(10) (2)213 (1)1522 8 1 1 1 ()()0 13(4)2(3 6 8 4 1 1 1 ( )( ) 17(13)3(17) 3 5 4 5 2 ( )(10) (5)343 (1)1287 4 3 (4)(13) 2(8) 8(17.5) 1 1 ()() 130(165) (4)222 6 8 2320(28)(30) 0.8(2.5)(4.6)2.6 2 1 1 4 2 7 ()() 3.2()(3.7) 3 6 7
4、5 5 5 6 3 ()()(6) 25(2)3(1) 7 7 4 1 6 ( )( ) 29(13)7(10) 5 8 5 1 (0.8)(6) (3)442 (1)1832 7 1 1 1 ()()0 29(3)2(4 6 8 4 1 4 7 ( )( ) 12(20)10(12) 7 5 8 1 1 ( )(20) (5)212 (1)2128 7 2 (13)(17) 1(11) 0(3.5) 1 1 ()() 190(104) (1)323 5 5 1416(10)(4) 7.8(5.8)(3.1)1.6 2 1 1 2 9 8 ()() 3.9()(8.7) 5 3 5 5 5 5
5、 3 5 ()()(4) 12(3)2(2) 7 7 1 1 8 ( )( ) 20(29)10(19) 4 8 9 1 (0.5)(800) (1)232 (1)1565 2 1 1 1 ()()0 10(3)3(3 8 9 9 1 5 1 ( )( ) 4(13)8(13) 4 4 5 1 1 ( )(30) (1)452 (1)2667 5 2 (5)(14) 12(3) 14(5) 1 1 ()() 162(1310) (0)233 6 7 174(14)(17) 5.9(10)(4.7)1.5 2 1 1 3 3 8 ()() 5.7()(1.2) 5 8 6 7 5 5 6 2 (
6、)()(7) 19(4)2(1) 7 7 10 1 4 ( )( ) 17(26)5(20) 9 6 5 1 (0.9)(90) (1)232 (1)1157 3 1 1 1 ()()0 30(2)2(1 6 3 8 1 4 3 ( )( ) 29(26)10(13) 6 3 4 3 8 ( )(30) (5)443 (1)1217 2 7 (17)(10) 4(18) 4.5(22.5) 1 1 ()() 133(171) (0)244 8 4 2119(17)(21) 3.5(6.3)(4.5)7.8 2 1 1 2 3 4 ()() 2.6()(7.7) 9 5 9 7 5 5 1 2
7、()()(10) 24(3)3(5) 7 7 1 1 1 ( )( ) 29(19)10(18) 8 2 3 1 (0.6)(40) (4)253 (1)2423 5 1 1 1 ()()0 25(1)3(5 6 2 4 1 1 1 ( )( ) 11(21)6(20) 8 4 7 1 2 ( )(90) (5)222 (1)1814 8 3 (14)(7) 11(16) 7(6.5) 1 1 ()() 14(35) (1)332 4 3 1815(2)(1) 5.6(7.4)(3.9)9.4 2 1 1 4 6 9 ()() 7.9()(3.3) 5 4 3 7 5 5 4 4 ()()(7
8、) 23(3)2(4) 7 7 3 1 6 ( )( ) 4(30)5(17) 2 4 5 1 (0.3)(90) (3)242 (1)1599 2 1 1 1 ()()0 7(4)2(2 2 6 6 1 7 8 ( )( ) 19(24)8(13) 4 8 7 1 5 ( )(60) (3)233 (1)2290 6 6 (18)(4) 19(12) 2(24) 1 1 ()() 44(164) (1)243 8 9 419(7)(13) 5.3(3)(4.6)3.8 2 1 1 1 6 3 ()() 6.8()(8.1) 7 2 5 7 5 5 1 4 ()()(7) 24(1)2(1)
9、7 7 8 1 8 ( )( ) 11(22)8(14) 7 8 9 1 (0.4)(1000) (3)213 (1)1406 9 1 1 1 ()()0 4(3)2(4 8 8 2 1 5 3 ( )( ) 16(20)6(20) 4 6 4 1 1 ( )(90) (3)452 (1)1177 5 8 (18)(2) 2(7) 9.5(12) 1 1 ()() 91(172) (3)423 2 4 248(1)(19) 5.1(2)(0.5)6.8 2 1 1 1 8 3 ()() 1.6()(1.8) 3 3 2 7 5 5 5 5 ()()(4) 25(3)3(2) 7 7 5 1 1 ( )( ) 10(16)9(13) 4 4 5 1 (0.4)(6) (3)332 (1)2550 4 1 1 1 ()()0 20(3)3(3 6 7 9 1 1 5 ( )( ) 2(24)3(17) 4 4 6 3 3 ( )(90) (4)222 (1)1448 4 4 (18)(2) 14(1) 6.5(9.5) 1 1 ()() 165(710) (1)213 2 2 303(10)(3) 5.3(5.1)(4.4)5.8 2 1 1 1 3 3 ()() 2.8()(9.8) 3 2 3 5 5 5
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