1、初一数学上册有理数的计算专项练习79 4 5 ()()(8) 11(4)3(5 7 7 1 1 4 ( )( ) 3(12)4(11) 3 8 5 1 (0.4)(2) (4)253 (1)2695 2 1 1 1 ()()0 4(4)3(4 8 3 2 1 1 5 ( )( ) 11(24)2(13) 8 7 4 1 2 ( )(100) (4)312 (1)2889 6 3 (6)(17) 11(3) 4(18.5) 1 1 ()() 164(136) (1)314 6 5 519(30)(28) 9(3)(3.5)2.3 2 1 1 1 7 2 ()() 5.2()(9.8) 7 7 6
2、 5 5 5 1 6 ()()(3) 18(2)2(2 7 7 1 1 1 ( )( ) 3(29)3(12) 8 8 9 1 (0.3)(60) (4)242 (1)1212 3 1 1 1 ()()0 20(2)2(2 4 5 8 1 6 1 ( )( ) 10(28)3(17) 6 5 7 7 1 ( )(30) (3)233 (1)1131 6 4 (1)(5) 0(15) 9.5(17.5) 1 1 ()() 33(196) (4)244 4 9 307(13)(15) 6.5(1.5)(3)0.6 2 1 1 1 6 4 ()() 7.1()(8.2) 9 2 8 7 5 5 4
3、6 ()()(3) 15(4)2(3 7 7 10 1 4 ( )( ) 6(24)8(15) 9 4 5 1 (0.9)(5) (2)423 (1)1026 5 1 1 1 ()()0 23(4)3(1 6 2 2 1 8 9 ( )( ) 10(17)7(11) 3 7 8 9 1 ( )(100) (5)323 (1)2840 8 6 (8)(6) 18(14) 9.5(23.5) 1 1 ()() 144(42) (1)324 2 5 2216(30)(16) 0.9(6.1)(4.9)1.5 2 1 1 3 8 1 ()() 5.7()(6.5) 9 7 2 7 5 5 4 1 ()
4、()(8) 20(2)2(1 7 7 5 1 1 ( )( ) 24(22)3(20) 4 8 7 1 (0.4)(6) (2)222 (1)1017 6 1 1 1 ()()0 3(4)3(3 7 8 4 1 1 4 ( )( ) 4(22)10(12) 2 8 5 1 1 ( )(60) (5)442 (1)1561 3 2 (12)(14) 2(7) 7(18.5) 1 1 ()() 112(71) (5)412 9 5 298(8)(22) 2.7(2.1)(4.4)7.8 2 1 1 4 6 6 ()() 7.4()(3.3) 7 8 5 5 5 5 1 1 ()()(4) 1(4)
5、2(1 7 7 2 1 1 ( )( ) 24(26)9(11) 3 8 7 1 (0.1)(900) (1)232 (1)2586 5 1 1 1 ()()0 24(2)2(4 3 4 5 1 3 6 ( )( ) 6(13)4(19) 5 4 7 1 3 ( )(60) (1)353 (1)1546 5 2 (18)(14) 13(4) 10(23.5) 1 1 ()() 55(41) (5)332 6 4 54(13)(25) 4.5(1.3)(1.5)5.6 2 1 1 1 1 7 ()() 1.7()(7.2) 5 8 9 7 5 5 2 5 ()()(6) 21(3)3(5 7 7
6、 1 1 1 ( )( ) 9(22)10(18) 5 8 3 1 (0.9)(30) (1)343 (1)1033 9 1 1 1 ()()0 3(3)3(1 9 2 3 1 1 7 ( )( ) 28(21)8(17) 2 2 8 1 1 ( )(10) (4)412 (1)1292 7 2 (5)(10) 16(9) 10.5(12) 1 1 ()() 183(24) (4)332 5 4 4012(29)(26) 1.1(3.2)(2.1)2 2 1 1 2 1 8 ()() 2.5()(3.3) 3 9 7 5 5 5 1 1 ()()(6) 9(1)2(1 7 7 4 1 1 (
7、)( ) 22(28)8(12) 3 6 3 1 (0.5)(1000) (2)423 (1)1854 7 1 1 1 ()()0 16(1)3(4 6 2 6 1 1 1 ( )( ) 26(15)5(12) 6 8 4 1 1 ( )(40) (5)222 (1)1904 3 6 (20)(8) 3(8) 10(6) 1 1 ()() 13(11) (4)442 7 5 2018(20)(22) 7.4(9.7)(4.9)3.3 2 1 1 3 8 6 ()() 2.7()(6.3) 9 2 9 7 5 5 6 1 ()()(2) 9(3)2(4 7 7 8 1 1 ( )( ) 22(2
8、6)3(19) 9 4 5 1 (0.9)(20) (1)423 (1)2371 4 1 1 1 ()()0 15(3)2(4 5 3 2 1 1 1 ( )( ) 13(17)1(15) 8 5 2 7 2 ( )(80) (4)252 (1)2804 6 3 (1)(11) 9(11) 7.5(19) 1 1 ()() 13(176) (4)443 8 9 2619(27)(1) 0.1(4.1)(2.6)4.4 2 1 1 4 2 8 ()() 1.3()(3.8) 5 3 8 5 5 5 3 5 ()()(4) 21(4)3(2 7 7 5 1 1 ( )( ) 8(12)7(17)
9、6 4 5 1 (0.1)(10) (5)323 (1)1881 6 1 1 1 ()()0 12(4)3(4 2 3 6 1 3 3 ( )( ) 12(10)5(15) 2 4 2 2 2 ( )(70) (5)412 (1)2869 3 3 (15)(16) 1(2) 1.5(19) 1 1 ()() 111(88) (5)322 7 6 3212(8)(1) 6.7(3.9)(2.4)0.2 2 1 1 2 1 3 ()() 4.5()(1.5) 5 4 7 5 5 5 4 5 ()()(10) 14(2)2(1 7 7 7 1 1 ( )( ) 24(30)1(20) 6 2 7 1
10、 (0.2)(10) (5)212 (1)1393 9 1 1 1 ()()0 16(1)3(2 4 7 2 1 1 1 ( )( ) 10(22)5(20) 6 5 6 2 5 ( )(40) (5)222 (1)2034 3 6 (19)(15) 9(11) 11(20.5) 1 1 ()() 82(137) (5)422 2 9 87(2)(29) 3(8.4)(2)0.3 2 1 1 3 1 4 ()() 7.2()(3.1) 9 8 3 5 5 5 1 2 ()()(5) 16(3)3(2 7 7 1 1 4 ( )( ) 1(18)6(15) 8 8 5 1 (0.1)(300)
11、(2)313 (1)2483 8 1 1 1 ()()0 17(2)2(5 3 5 7 1 1 1 ( )( ) 17(27)2(18) 8 2 4 7 1 ( )(100) (1)412 (1)1307 6 6 (11)(18) 8(8) 14.5(1) 1 1 ()() 42(121) (2)222 2 6 349(8)(27) 4.9(0.9)(4.7)10 2 1 1 4 7 4 ()() 3.9()(8.8) 9 5 9 5 5 5 5 3 ()()(9) 18(4)2(4 7 7 5 1 4 ( )( ) 22(28)7(17) 4 4 3 1 (0.4)(900) (2)453 (1)1950 8 1 1 1 ()()0 20(4)3(3 4 3 7 1 1 4 ( )( ) 16(23)2(15) 6 2 3 1 9 ( )(50) (5)443 (1)1692 6 8 (2)(9) 0(7) 8.5(23) 1 1 ()() 94(75) (3)342 3 8 248(16)(7) 7.3(1.6)(5)2.5 2 1 1 1 2 6 ()() 8.2()(6.8) 7 7 7 5 5 5
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