1、初一数学上册有理数的计算专项练习66 4 4 ()()(1) 30(3)2(5 7 7 1 1 10 ( )( ) 27(30)3(10) 7 6 9 1 (0.2)(4) (2)413 (1)2901 6 1 1 1 ()()0 20(4)3(4 3 7 7 1 9 1 ( )( ) 8(11)4(11) 4 8 7 1 1 ( )(70) (1)252 (1)2282 4 6 (20)(17) 11(9) 6(2.5) 1 1 ()() 134(76) (5)442 3 9 368(18)(28) 0(6.8)(1.3)0.8 2 1 1 3 1 2 ()() 7.5()(7.9) 7 2
2、 2 5 5 5 4 2 ()()(7) 27(2)3(3 7 7 1 1 1 ( )( ) 17(28)9(20) 2 2 3 1 (0.2)(700) (4)233 (1)1799 4 1 1 1 ()()0 3(2)2(5 6 5 4 1 8 3 ( )( ) 26(26)8(11) 3 7 2 1 7 ( )(90) (4)242 (1)1896 7 8 (8)(14) 18(14) 7(24.5) 1 1 ()() 01(135) (5)423 4 6 1314(21)(19) 6.9(8.1)(3.6)8.4 2 1 1 2 6 6 ()() 2.2()(2.6) 3 9 2 5
3、5 5 2 4 ()()(6) 6(2)3(2 7 7 1 1 1 ( )( ) 20(11)4(17) 4 6 7 1 (0.3)(8) (1)322 (1)2031 4 1 1 1 ()()0 23(4)3(4 3 6 5 1 4 1 ( )( ) 27(21)10(18) 7 3 6 6 3 ( )(10) (3)352 (1)2835 7 4 (16)(2) 13(1) 4(8.5) 1 1 ()() 152(64) (4)414 2 5 415(12)(6) 4.6(7.6)(0.3)1.6 2 1 1 4 4 2 ()() 9.9()(2.6) 7 2 8 7 5 5 2 6 ()
4、()(2) 21(1)2(5 7 7 8 1 10 ( )( ) 5(27)10(13) 9 4 9 1 (0.5)(4) (1)242 (1)2376 3 1 1 1 ()()0 28(4)3(4 7 3 7 1 1 3 ( )( ) 17(28)8(19) 4 7 2 1 1 ( )(100) (2)322 (1)1211 4 8 (1)(4) 10(18) 0.5(10) 1 1 ()() 45(31) (1)433 4 3 38(12)(22) 3.8(3.5)(2.2)5.7 2 1 1 4 8 7 ()() 5.4()(4.5) 9 7 5 7 5 5 5 2 ()()(4) 29
5、(1)3(2 7 7 7 1 1 ( )( ) 26(14)1(18) 8 6 3 1 (0.4)(800) (5)342 (1)2724 7 1 1 1 ()()0 8(4)2(1 2 6 3 1 1 7 ( )( ) 26(29)2(18) 5 5 6 1 1 ( )(100) (4)412 (1)1478 6 2 (2)(17) 12(3) 13(18) 1 1 ()() 20(97) (4)423 3 6 225(25)(16) 2.9(4.6)(2.9)9.9 2 1 1 1 2 7 ()() 4.5()(1.8) 7 7 4 7 5 5 2 5 ()()(6) 11(1)2(4 7
6、 7 1 1 8 ( )( ) 9(24)8(17) 2 4 7 1 (0.3)(800) (1)223 (1)2782 5 1 1 1 ()()0 15(4)3(1 8 2 3 1 1 8 ( )( ) 16(24)9(19) 7 2 7 1 8 ( )(60) (3)232 (1)2558 7 7 (3)(11) 14(16) 2.5(23.5) 1 1 ()() 162(57) (1)244 8 3 217(22)(30) 3.2(1.8)(3)8 2 1 1 1 2 3 ()() 9.2()(2.8) 7 8 3 7 5 5 2 5 ()()(10) 7(4)3(2 7 7 1 1 1
7、 ( )( ) 3(18)3(20) 6 6 5 1 (0.4)(1) (1)252 (1)1588 2 1 1 1 ()()0 24(2)2(3 7 6 9 1 1 5 ( )( ) 25(12)7(13) 5 2 4 4 1 ( )(30) (5)313 (1)2960 5 2 (8)(13) 14(9) 6.5(3) 1 1 ()() 55(149) (2)232 2 2 199(23)(22) 4.6(6.7)(1.1)8.6 2 1 1 4 9 4 ()() 4.2()(1.2) 9 7 2 7 5 5 3 2 ()()(2) 4(2)2(3 7 7 7 1 2 ( )( ) 18(28)10(19) 8 8 3 1 (0.8)(20) (4)342 (1)2436 3 1 1 1 ()()0 24(1)3(3 6 9 6 1 1 8 ( )( ) 10(24)10(19) 2 6 7 1 5 ( )
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