分数乘除法简便运算100题

1、(1)8 4+9 27(4)1212(10)625x 24(13)(16)34x 25(19)2262 x分數乘除法簡便運算 100題(2)152(5) 2(8)3 53x + x -4 274(6)6762x- -x135135(9) 37 x335153103x-214x 101-33(14)x 99 + :55(15) ( 7 + 8)x 7 x 9(17) 3634355(18)(-(20) 32| x5(21)10<25丿3卜5(22)I 7 丿(23)24)7/|1 - 91-92 - 9(26)55+ +9125123433X-X-87873(2% -(28)63§

2、;(29)(30) |9 x(15 X |1 )(31)(32) 254 X 4(33) 54X(9 - | )(34)卜丄"2十03757§-3子 §1218 2472( 35) 8 11.11354(36 ) 7252125197 . . 11 2 5 T I A 959 115丄(37)6 848(38)11 5313. 1十一II 十12 642424(39)辽 912丿7912丿4343326557815788(40)343 (41) 88(42)5 351 1433 44 24 - 0.6(43)3 53(44) 8X 5 + 5 X 3.2(45)

3、101X 2555816 2 6(46) 8 + 8 X 15(47)8 15 宁 8(48)3 X 7 + 3 X 7(49 )( 90 + 88 ) X 89(50) 7 X 8+8 X 785 510(51) 15 X 16+27 + 945(52) 18X( 9+6 )2 2(53) - X 7+- X 53 3114(54)(丄一丄)X( 24 - 4 )6125(55) ( 5 X 4 + 4 )-一 41 2 1 1(56) 1 r (5(61) (32 X 丄 + 17)- 4 12+1 )x 丄(57)3- X7+4 X 337777535138111181(58) 333

4、X 33(59)912125(60)(63)18 、,9 ,7、,9 ,9X+X+25162516163 11(62) (25+ -)十-+ -4 44543(64) 63 ( -3)(65)5 -(1.1) 3.：.16341(21 x + x 21) x 9217823423(66)7749(67) (99 + )- 914(68)兰 r42(-+ 2 )x凹(69)54(-+ - )x 3010155311655 x 6 - 2 十 9(70) 65105(71)1 x 58+ 1 x 41 + 18 8 84451x工x上(80)46(72)5742x 4445(73)- x - +

5、-十 3(74)5655亠|(75)35 x 153 - 0.6 x 53(81) 20082006x -2007/ 41 、.77(76)(4 +1)匸3+命(7977) 1x 1.(3x 10)(78)(鲁 + 3 ) x 15 x 11(82)4157x x 72212(8391394石x石+局x石(84)369x 37(85)111311131333(86)x 101- 252545 丄 355351(87)7 97 9(88) g x4+5 x4(89) 17x44 X 37(92)2004 X67(93)73(94) 16645200315 8120(96

6、)1 X( 2 - - - ) + 15 丄-口17341221(97)2000 - 2000 200020011 X 39 + 3 x 25 + 兰 X 2 (95) 444131993 1994 -13c2ccO 2“2 2、55、(99)3X 25 -+ 37.9 X 6-(100)(9+7)(+ )(98) 19931992 19945557979分數乘除法簡便運算100題答案(1)X 9 =31(2)3(315=0(3)11 X( 7 -1918(4)(5)23 _59 X 4 + 271136(6)67626v 135-135=13(7)12X 6 =1(8)X 2437 X 35

7、 = 3 3535251531033 177(11)21x 4 +21x 4 -4 = ?(12)询 x 101-厉=70888833(14)9x 9 9 x9 =0(14)x 99 +5=605=519484(15) ( 7 +9) x 7 x 9=92(16) 35 x25=95(17)3436 x 355518(18)( 6 - 9)x 石=1(35+1)34x 35=343435(19)2632(20) 3255x-6(25+|)=512(30+12 )5(21)10(22)3557=7丄7(23)8=8(24)2 199 =5(25)5 =12丄6(26)129121253(27)8

8、37(28) 63 3762(29)1 .626_7I_37376(31)52828 x3x=159882(30)29(32) 253x (15 x 3-)=x 4= 1033031(33) 54X(9 - 6 )=3(34)W2丄12182472 =29(35)3568X0.375 2-3 -811113=0(36)5719+2525(37) 5 848 =5811 5313. 1 r 12 642424 =771125+ X (39)959 11_5113c 3 °8 8(41)88=64(40)(42)434265578157 -343=750(5 5 5、“ 11、I 4-

9、+ 一 + + |33 亠5- 44 2: - -0.6353=6017912 丿 <7912 丿=5(44)6.81 1X丄+丄X 3.2=2(45)101 X4=16兰552525(46)5+5X 15 =10(47)88-8=1 丄881515162 6=61 、11(48)X+ _ X匕(49)(90+ ) X=1 -37377888988(50)5X3+5 X 557887=7(43)(51)815x A +162719=3(52)4518 X( 4+- ) =2396(53)2 x 7+2X 5 =833/ 544412(55)(-X+）十7777 =:7(57)33 X7_

10、+4 x333§811118857 . 595A - (54) ( 1 丄)X( 24 - ) =114612515(56)1 r/21、(+_ )1X =353 513(58)3331X 3=100039 12125 =915(61) (32 X 1 + 17)-(60)2.5253 456 =1(62)3(25+ -)十1 + 11444 =103 4(63)18、/ 9 ,7 、/9 ,99X+X+2516251616 =854363 () =20(64)9 21 734121(66)( 21 X 3 + 4 x 21)X 丄=仝7744(65)1623 =09 1(67) (

11、99+ )- 9 =11 110 914 ./ 42、10,7(68)+ -)X-=155311105699_ 1X. * (71)(70)6510 524 4511(72) X X - -(73)5 742 =14(69)(5+4)X 30 =49651X58 +1X -41+ -888=12.545234X+二565535 X 153 - 0.6 X 53=60 (75)5,、4/ 51、5(74).(-)5828】=44177-23(76)(5+ 4).3+ =1020(77)23(78)(15+召)X 15X 11=67(79)10X 6 )=33237匕=3里3939(80)46 X

12、44 ,44=44 454541575(82)7 X22X =1222928(84)36 X3737(81) 20082006X 2007 =2006200620079139j4_9(83）兀X乃+兀X17 =7q(85)111113 20一X=-131333 3325257 979 95351 =59(88) 9 X4+5 X4 =9(89) 17X16=9 167745355(86)X 101-=28(87)=(91) X 37451=(1-)X 37451=1 X 37 - X 3745(92) 2004 X=2003672003(2003+1)X67200367672003200367

13、2003(72 +）X 1158116172 X+X8158=36 =67451 1(93)73 X 丄158=9 -1541、1=(164 +)X20411411164 X+X412041(94) 166 丄-4120=41201 “3 门263X 39 +X 25 +X(95)4441333326X 13 + -X 25 +X 444133= X( 13 + 25 + 2)43= X 404=30423117(96)1X(2 -)+ 15十1734122121、/d 11“ 121=X1 +15 X1712121721宀111=X(1 + 15)171212=21(97)2000 - 2000-200020012000 2001 2000 =2000 十=2000 -=20012002200120012000 20021993 1994 -1(98) 19931992 1994=(1992 +1) 0994 1 1993 1992 1994=1992 x 1994 +19931993 1992 1994=1322(99)3 X 25+ 37.9 X 655532