1、5(13)4(4 +9 ) x 7 x 9(16) 35 x 25(15)(17)3436 x 355 5(18) ( 6 - 9 ) x185(20) 32(21)(22)35 7 5(23)77 12 1(24) 9 9 9 9(26) 5124 _59 12(27)8 -(28) 633762(29)(30)29 x(15 x39 )(31)X 15(32) 2易11(33)54 X(34)2472(35)0.3752619(36)色195 3 丄(37) 6 8 48 115 3 13 1126 4 24 24(40)4 3265 578 1573 4(41) 85 5 丄丄7 9 1
2、2 7 9(43)33440.6(44) 6.8+ - X3.2(45)101 X4(46) - + - X 158 8(47)8_815-86(48)X- +X-(49)(90 + )X 88899 6(51) X A + A + 115 16 27 92 2(53) - X 7+- X 53 3(54)( 6 -右)X( 24- )(55) ( 5 X 4+ 4 )- 47 7 7 7(56) 5 亠(2+1 )X 却(58) 3331 X 3(57) 33 X + X 338 11 11 8 (59) 5 12 12 9(67) (99+ )- 93 4 1(66)( 21 X - +
3、4 X 21)X 17 7 414 4(68)亦 r (8X 254(69) ( +_)X 3065X+(70) 6(71)-58 HX41 + -4 4 54 5 ,(72) X- X - (73) X- +* 5 7 45 6(74)匚勺8X 153 -0.6X 53(75) 5(76) (5 + 1 )+ 10(77)1 X 舟宁(3X6 )(78)(X 15X 11(79)1439(80) 46 X4445(81) 2008 X006“CC、 4(82)-X 22X石9 13 9 4(83)兀X乃+兀X乃(84) 36 X(85)11 11 1313 13 X 33(86)X101-Z
4、25 25(87)1 43 一 4(89) 17X16(91)44 X 37(92) 2004 X672003(93)73 X -15 8(94) 166 丄-41201 “3 X 39 +X 25 +(95) 4134 2 3 1 17(96)1 X( 2 - - ) + 15 - -17 3 4 12 21(97)2000 - 2000-200020011993 1994 1(98) 1993 1992 1994(99)3 - X 25- + 37.9 X 65 5 5(100) (9 2+7 2 )-( -+5 )7 9 7 9分数乘除法简便运算100题答案(1) (9 +247 )X
5、3 x 9 =31(2)(?-3)x 亦=06 x( 7 -2)=18(3)(4)-1 一 62 3 5(5)9 x4+27 x36(6)6_(7) 12 x 6 -令 x 6 =1(8)8+ 8x 737 x35= 335(10) 25 x 24(25-1 )=5(12)x x 101- =7。(14)9 x 9 =0(14) x 99 + =60(16) ( 4 + 9 ) x 7 x 9=92(16) 35 x25=95(18) ( I -5 189)近=1=(35+1)x 35=34(19)x-=(25+5 )x 13 5(30+号=27=7-(24)9=5(25)20 -=12丄(2
6、6)12 9 12 5(27)3 -=37可(30)2929X(15 X 3-)31(33) 54 XX 8 = 215 95)=3(32)3 =0254X 4= 1032172 =109=19 -(38) 648=58(38)24 =7(39) 911 =2655781573=7508 =64(42)7 9 127 9 12 =5(43) 3 5 3 =60(45) 6.8 X1 + 1 X3.2 =2 (45)4 4101 X =16(46) + X15 =10 (47)8空+8=1丄15 15X6 + z X61、90 + )X :=1 -53 5 5 5(50) 5 X 3+5 X 5
7、 -7 8 8 7=7(51) - X16 27=3(52) 18X=23(53) 2 X 7+2 X 5 =8(55)(5x 4 + 4)宁 4 127 7 7 7 =7(54) (1 -丄)X( 24 - - ) =1(56)-(+i)X 协3(57) 33 X + X 33= 338 11 11 8 8(58)333 X 3 =1000(59)(60)25 2 534 5 6=1(62) (32 X 1 + 17)-_ 512=60(62)(25+ 3 )1 1 1 +4 4 =10349 |X+16 =863 (- 3) =20(64) 9 21 7(65)( )8 2 3 4 23
8、=03 4 1 21(67)( 21 X 3 + 4 5 X21)X - =217 7 4 491(67) ( 99+ )- 9 =11-109(69) ( +_)X 30 =49X -j =(71) - X58+ X41+ 8 8 8=12.5(74)勺5 X 153 -0.6X 53=60 (75) 54 1 7 7 23(76)( 5 + 4 心 3 +10 =201 13 10(77)8 X 运r5 X 6 )=-32(78)(亦+ 石)X 15X =6737竺=3印39 39(80) 46 X =444445 45(81)20062008 X007=2006:202007(82)7
9、x 22 x 1222(83)_9:a 36x為弋(86) X101-Z =284 5 3 5 5(87) =-79 7 9 9(88) 9 X+ 9 X=99 =理16 916(91) X 37=(1- )X 37=1 X 37 - X 37=36 (92)2004 X 67=(2003+1)X=2003+ 1 X=67(93)73 X 116、(72 +X丄72 X=9 -41、=(164 +41164 X=43 1 X 39 +X 25 +=-X 13 +3x 26413=3 X( 13 + 25 + 2 )= X 40=30(96)1 X( 2 2 -3 ) + 15 -1721 X
10、111 + 15 丄 X1,1X( 1 一+ 15 =2000 -=2000=200120022000 2001 2000亠 20012000 2002 (98) 1993 1992 1994(19921) 1994 1199319921992 19941994 1993+ 25 - X 6 - + 12.5 X 6= (3.6+6.4 ) X 25.4 + 12.5 X 8X 0.8=254 + 80=3342 2 5 5(100) ( 9工+7 ) + (三 +三)=(竺 + 坐)+ ( 5+5 )1 1 1 1=65 X (_ + _)十5 X (_ + _)=65 - 5(73)4 x4 X 5 _ 1 丄5 7 4 2 = 14
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