1、初一数学上册有理数的混合运算专项练习题25 4 1 ()()(2) 2(1)2(1) 7 7 6 1 1 ( )( ) 21(27)2(17) 5 6 7 1 (0.9)(70) (4)223 (1)1716 6 1 1 1 ()()0 27(1)2(5 9 3 9 1 1 1 ( )( ) 12(17)5(20) 5 6 2 6 1 ( )(30) (2)443 (1)1642 7 4 (14)(11) 12(13) 5(12.5) 1 1 ()() 101(186) (5)234 8 8 417(3)(10) 0(5.8)(0.8)2.5 2 1 1 4 7 1 ()() 3.3()(2.
2、8) 9 5 8 7 5 5 5 5 ()()(1) 2(2)2(4) 7 7 4 1 1 ( )( ) 25(20)1(18) 3 2 3 1 (0.3)(6) (2)253 (1)2401 3 1 1 1 ()()0 9(1)3(5 9 8 6 1 1 7 ( )( ) 8(16)6(19) 6 4 6 4 1 ( )(60) (4)332 (1)1167 5 4 (16)(2) 3(2) 13(9.5) 1 1 ()() 82(161) (3)352 6 7 136(1)(29) 4.2(9.7)(0.1)6 2 1 1 3 8 8 ()() 7.6()(6.5) 5 6 5 7 5 5
3、 1 6 ()()(6) 28(4)3(5) 7 7 1 1 1 ( )( ) 20(29)10(10) 3 4 7 1 (0.5)(5) (3)342 (1)2667 2 1 1 1 ()()0 19(2)2(5 8 9 9 1 3 7 ( )( ) 6(29)10(12) 7 2 6 1 7 ( )(50) (2)342 (1)2828 2 6 (17)(9) 16(15) 2.5(3) 1 1 ()() 32(142) (2)314 4 3 51(23)(23) 6.4(3.9)(0.2)7.6 2 1 1 1 2 7 ()() 8.1()(2.2) 9 4 5 5 5 5 3 5 ()
4、()(4) 25(2)3(1) 7 7 5 1 10 ( )( ) 6(21)7(12) 4 4 9 1 (0.5)(500) (2)222 (1)2602 3 1 1 1 ()()0 8(2)2(5 4 3 3 1 1 1 ( )( ) 3(29)8(17) 3 5 3 7 1 ( )(20) (2)342 (1)2011 6 3 (14)(3) 3(12) 9(13.5) 1 1 ()() 162(46) (1)433 6 7 2819(19)(4) 0.6(1.1)(0.3)3.1 2 1 1 3 8 8 ()() 8.8()(4.4) 7 8 8 7 5 5 1 4 ()()(1) 2
5、(1)3(5) 7 7 1 1 6 ( )( ) 16(15)10(17) 2 2 5 1 (0.8)(60) (1)212 (1)2955 7 1 1 1 ()()0 23(2)3(5 8 9 5 1 2 3 ( )( ) 11(23)5(16) 7 3 2 6 3 ( )(20) (4)212 (1)1248 5 4 (13)(1) 11(14) 2(2.5) 1 1 ()() 162(97) (0)454 6 4 119(28)(26) 6.1(6.1)(0.1)4.4 2 1 1 4 2 4 ()() 5.4()(3.7) 3 2 9 5 5 5 2 3 ()()(6) 25(1)2(
6、2) 7 7 1 1 4 ( )( ) 29(16)5(15) 5 2 3 1 (0.5)(900) (4)442 (1)1717 7 1 1 1 ()()0 30(1)3(1 5 7 3 1 6 1 ( )( ) 16(15)9(20) 4 5 4 1 3 ( )(60) (3)442 (1)2629 7 4 (4)(18) 5(18) 1.5(5.5) 1 1 ()() 112(81) (5)334 9 3 243(14)(12) 1.3(0.8)(2.4)2.8 2 1 1 1 7 4 ()() 9.7()(9.1) 9 2 2 7 5 5 3 4 ()()(8) 18(3)2(2) 7
7、 7 8 1 6 ( )( ) 5(11)8(18) 7 6 5 1 (0.1)(3) (5)332 (1)1207 6 1 1 1 ()()0 4(2)2(1 5 9 2 1 7 1 ( )( ) 30(13)7(17) 6 6 7 1 1 ( )(50) (2)353 (1)1838 7 5 (13)(19) 10(2) 3.5(1.5) 1 1 ()() 14(153) (1)312 2 6 313(17)(8) 1.6(6.2)(4.2)6.2 2 1 1 1 1 4 ()() 1.5()(6.5) 3 3 6 7 5 5 6 5 ()()(6) 12(1)2(3) 7 7 2 1 8
8、 ( )( ) 3(29)1(12) 3 4 9 1 (0.9)(80) (4)332 (1)1096 9 1 1 1 ()()0 9(1)2(4 6 9 7 1 5 1 ( )( ) 23(20)9(18) 5 4 3 1 4 ( )(30) (4)453 (1)1793 3 3 (18)(7) 2(17) 0(16) 1 1 ()() 193(103) (3)413 8 8 128(23)(16) 9.9(1.3)(4.6)9.6 2 1 1 3 8 3 ()() 7.2()(1.6) 7 3 7 5 5 5 6 2 ()()(4) 17(2)3(3) 7 7 5 1 10 ( )( )
9、2(30)1(16) 6 6 9 1 (0.9)(5) (1)433 (1)2231 5 1 1 1 ()()0 28(1)2(2 5 4 6 1 1 1 ( )( ) 9(14)7(10) 4 3 8 1 1 ( )(60) (1)353 (1)2207 8 3 (11)(4) 2(10) 12.5(17) 1 1 ()() 144(203) (1)342 3 8 2517(8)(28) 0.1(2.1)(3.4)2.4 2 1 1 2 6 7 ()() 6.6()(4.9) 9 8 2 7 5 5 4 3 ()()(9) 26(1)3(3) 7 7 1 1 1 ( )( ) 30(29)10(12) 9 2 9 1 (0.7)(2) (2)423 (1)2507 6 1 1 1 ()()0 20(1)3(1 7 2 2 1 1 4 ( )( ) 6(16)9(14) 3 7 5 1 6 ( )(10) (4)423 (1)1373 4 5 (20)(1) 12(12) 6(12.5) 1 1 ()() 23(131) (5)322 5 6 2116(9)(26) 7.9(9.4)(3.5)7.4 2 1 1 3 1 9 ()() 7.8()(5.5) 3 2 8 7 5 5
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