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1、 分数乘除法简便运算分数乘除法简便运算 100100 题(有答案)题(有答案)(1) ( +)3 9 (2) ( - ) 8 94 273 83 86 15(3) (7 - ) (4) + 1 62 35 65 95 91 6(5) + (6) - 2 93 45 273 46 137 56 132 5(7) 6 - 6 (8) + + 7 125 123 83 84 73 83 7(9) 37 (10) 24 3 356 25(11) + - (12)101- 15 213 410 213 43 47 107 10(13) (14) 99 + 8 98 98 98 93 53 5(15)(
2、+ )7 9 (16)3 25 4 78 94 5(17) 36 (18) ( - ) 34 355 65 918 5(19)26 (20)32 231 52 55 6(21) (22) 51 21 10157535 (23) (24) 87 74 87 7391 92 91 97(25) (26) 652053 125 94 125 95(27) - - (28) 3 83 84 73 83 7 623763(29) (30)(15) 31 76 32 762 2929 31(3131) (3232)25 45 82 38 153 4(3333)54( - ) (34)8 95 6721 2
3、45 187 1211 (35)35) (36)(36) 3831162375. 0115 8319252142519 75(37)(37) (38)(38) 481 83 65 241 2413 43 65 1211 (39)(39) (40)(40) 115 92 511 97341574357834265(41)(41) (42)(42) 883883 121 91 71 125 95 75(43)(43) 6 . 035244453 3533(44) 6.83.2 (45) 101 51 51 254(46) 15 (47)8885 85 158(48) (49) ( 90) 31 7
4、6 32 76 881 891(50)+5 73 85 85 7(51)+ (52)18(+)8 155 165 2710 94 95 6(53)7+5 (54) ()(24)2 32 31 61 124 5(55) (+) (56)(+)5 74 74 74 71 52 31 51 13(57) (58)3 833117 114 83331333(59) (60) 59 125 127 9565 52 45 32(6161)(32(3217)17)(6262)(2525) 41 125 43 41 41(6363) 2518 169 257 169 169(64)(65) )73 214 9
5、5(63231643)31 21(85(66) (2121) (67) (99)9 73 74 41 109(68)() (69)()30 1514 54 32 1110 65 54(70) (71) 584165 56 109 59 81 81 81(72) (73) 54 74 45 21 54 65 52 53(74) () (75)153 0.65354 85 21 8535(76)( ) (77) ( ) 451473710181235109(78)(78) ( ()1511)1511 (79)(79)2 2 1 15 53 3 1 11 1 391437(80) 46 (81) 2
6、008 454420062007(82) (83) 4715227129101317910417(84)36 (85) 9 3711 1311 1313 33(86) 101-(87) 257 257 95 73 95 74(88) (89)17 59345914916(90)200620082007(9191)3737 (9292)200420044544 200367(93)73(93)73 151 81(94)(94) 1661664141 201(95)(95)3939 + + 2525 + + 41 43 426 133(96)1(96)1(2 2 - - )+ + 1515 174
7、 32 43 121 2117(97)20002000(97)20002000 20012000(98)(98)199419921993119941993 (99)3(99)32525 + + 37.9637.9653 52 52(100)(100)(9 9+7+7)(+ +)72 92 75 95分数乘除法简便运算分数乘除法简便运算 100 题答案:题答案:(1) ( +)3 9 =31 (2) ( - ) =0 8 94 273 83 86 15(3) (7 - )= (4) + = 1 62 3 18195 65 95 91 65 9(5) + = (6) - = 2 93 45 273
8、 4 36116 137 56 132 56 13(7) 6 - 6 =1 (8) + + = 7 125 123 83 84 73 83 7 43(9) 37 = 3 (10) 24 3 35 3566 25= (25-1) 6 25=52519(11) + - = (12)101- =70 15 213 410 213 43 4 717 107 10(14) =0 (14) 99 + =60 8 98 98 98 93 53 5(16)( + )7 9=92 (16)3 25=95 4 78 94 5(17) 36 (18) ( - )=1 34 355 65 918 5=(35+1)34
9、 35= 343534(19)26 (20)32 231 52 55 6=(25+) =(30+) 351 5 5125 6=5 =2731(21) = (22) =7 51 21 1017157535 71(23)= (24)=5 87 74 87 737891 92 91 97(25) =12 (26)= 652053 21 125 94 125 95512(27) - - =0 (28) =37 3 83 84 73 83 7 6237636237(29) = (30)(15) = 31 76 32 76 672 2929 31 3130(3232) = (3232)25 4= 103
10、5 82 38 15 923 4(3333)54( - )=3 (34)=109=1098 95 6721 245 187 1211 (36)36) =0=0 (36)(36) =19=19 3831162375. 0115 8319252142519 7575(38)(38) =58=58 (38)(38) =7=7 481 83 65 241 2413 43 65 1211 (39)(39) = = (40)(40) =750=750115 92 511 97115341574357834265(41)(41) =64=64 (42)(42) =5=5 883883 121 91 71 125 95 75(43)(43) =60=60