《四数学简便计算题.doc》由会员分享,可在线阅读,更多相关《四数学简便计算题.doc(20页珍藏版)》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、 .四年级下册数学简便计算题第一类:加65+73+135357+288+143272+68+28129+235+171+16517+145+23+35999+99+9+36+7+8+102+103+1049998+3+99+998+3+9第二类:减400-256-44517-53-47284-159-41478-47-178258-42-16545-167-145236-(177+36)344-(144+37).1 .第三类:乘4545235225948(12513)(250125)(48)88125721251256425421258525488125第四类:乘(12+50)40125(40
2、-4)7610318125997825444225999.2 .第五类:乘4537+37552821+28791723-23746+46593846+64389932+321672+1673+167528225-2225-6225398+639-394(42+25)125+(18+15)1252324+2542+2718+2581 9922+3334第六类:除3604925052600125.3 .8005842035480548240512780012240025第七类:加减92+99197+102354-108405-99127-98323+189-123248+86-48672-36+6
3、4(6467-832)+(1832-1467)1530+(592-530)-192(2+4+6+98+100)(- 1+3+5+97+99)第八类:乘除960464899000121113702381234.4 .640(164)1000(1254)第九类:加减乘除(98+147)49(230-23)23(250-25)25173628+106428(37+15)85+13604212585(12+50)4018125125(860+24012) 700+612124200520062006-20062005200525488125125(40-4)8610325444225.5 .99999
4、784538+38553846+64382821+28799932+323723-23746+46591672+1673+1675398+639-39428225-2225-6225(42+25)125+(18+15)125 65+73+135357+288+143272+68+28129+235+171+16517+145+23+35.6 .400-256-44517-53-47478-47-1784545284-159-41258-42-16545-167-145236-(177+36)2594344-(144+37)23528(12513) (250125)(48)88125721251
5、2564254212585125(40-4)25488125(12+50)407610318125.7 .2544422599999784537+37552821+28791723-2373846+64389932+3246+46591672+1673+1675398+639-39436049250526001258005848054824051242035117+392+60888272712.8 .8753874752853477757252346634435(135189)16725322525389938108751471479925(48)3520175982574125882125
6、86253212535004252548420352302557028241159.9 .882727126.3 1.812564+1253664199645285347158395105480025 (13856)(456)2.1 99 2.10.18 4.26 0.18 4.26810047516800120124824315015(10000-1000-100-10)1013829362107 99+999+9999+9999966.868.661.3410. .88118910 0.432 2.5689819925 6.8 0.04355+260+140+245102992125645
7、-180-245125322546101569926382101-382102247842246050863.4 2.5 0.436643664930 0.652357183317357672366450025734143755-287+8711. .18143784228999893999+49888225225123821653582759-126-2596982919568(68178)1552564598216+89+117599+275105015772002430219 9958 10176 1027846+7854169123231691291011295651+5648+561
8、252532242512. .514+1892142474+262473225433256254125109+(291176)228+(72+189)(375+1034)+(966+125)(2130+783+270)+101713. .参考答案第一类:加65+73+135357+288+143=357+143+288=788272+68+28=65+135+73=273=272+28+68=368129+235+171+165=129+171+(235+165)=70017+145+23+35=17+23+(145+35)=220999+99+9+3=999+1+(99+1)+(9+1)=1
9、1106+7+8+102+103+1049998+3+99+998+3+9=102+8+(7+103)+(6+104) =9998+2+(99+1)+(998+1)+(9+1)=330=11110第二类:减400-256-44=400-(256+44)=100517-53-47=517-(53+47)=417284-159-41= 284-(156+41)=84258-42-16=258-(42+16)=200545-167-145=545-145-167=233478-47-178=478-178-47=233344-(144+37)=244-144-37=63236-(177+36)=23
10、6-36-177=23第三类:乘4545=45(45)=9023522594=23(52)=2549=230=9008(12513)=812513=13000(250125)(48)=1258(2504)=100000088125=812511=110007212512564254212585=81259=9000=1258(258) =425(1258)=200000= 21000025488125=100(8125)11=1100000第四类:乘(12+50)40=1240+5040=880125(40-4)76103=12540-1254=5400=76(100+3)=76100+763
11、 =78281812525444225=22521=1050999=(10+8)125=25411=10125+8125=2250 =1109978=(100-1)78=10078-178 =772214. .第五类:乘4537+3755=37+(45+55)=37002821+2879=28(21+79)=28001723-237=23(17-7)=2303846+6438=38(46+64)=381109932+32=32(99+1)=320046+4659= 46(59+1)=2760=38(100+10)=38100+3810=41801672+1673+1675=167(2+3+5)
12、=1670398+639-394=39(8+6-4)=39028225-2225-6225=225(28-2-6)=4500(42+25)125+(18+15)125=125(42+18+25+15)=125002324+2542+2718+25819922+3334=33(66+34)=3300=8(23+25+27)=600第六类:除36049=360(49)=1025052= 250(52)=25600125=600(125)=1080058480548240512=80085 =480485 =240125=20 =2 =442035240025780012=42075 =240055
13、 =780062=12 =96 =650第七类:加减92+99197+102=197+(100+2)=197+100+2=299354-108=354-(100+8)=354-100-8=246=92+(100-1)=92+100-1=191405-99127-98323+189-123=323-123+189=389=405-(100-1)= 405-100+1=306=127-(100-2)=127-100+2=29248+86-48=248-48+86= 286672-36+64=672-(36+64)=572(6467-832)+(1832-1467)=6467-1467+(1832-
14、832)=60001530+(592-530)-192=1530-530+(592-192)=1400(2+4+6+98+100)-(1+3+5+97+99)=(2-1)+(4-3)+(98-97)+(100-99)=1+1+.+1+1 =5015. .第八类:乘除9604648=9604846=9209900012111=99000(12111)=90003702381234=12343381234=114640(164)=6401641000(1254)=10001254=160=32第九类:加减乘除(98+147)49=9849+14749=5(230-23)23=23023-2323=
15、9(250-25)25=25025-2525=9173628+106428=(1736+1064)28=100125(860+24012) 700+612124=125880=1258110=110000=700+612344=700+204=904(37+15)85+1360=5085+285+1360=4250+170+1360=5610+170=57804212585=1258(425)=210000200520062006-200620052005=2005200610001-2006200510001=025488125=10011(8125)=1100000(12+50)40=12
16、40+5040=680125(40-4)=12540-1254=450086103=86(100+3)=86100+863=88581812525444225=(10+8)125=12510+1258=2250=25411=22521=1100=105099999784538+3855=(100-1)9=1009-9=91=(100-1)78 =(45+55)38=78100-78=7722=38002821+2879=(21+79)79=79003723-237=(37-7)23=6903846+6438=(46+64)38=38009932+32=(99+1)32=320046+46591
17、672+1673+1675=(59+1)59 =(2+3+5)167=3540=1670398+639-394=(8+6-4)39=39028225-2225-6225=(28-2-6)225=2500(42+25)125+(18+15)125 65+73+135357+288+14316. .=(42+18)+(25+15)125=65+135+73=273=357+143+288=788=12500272+68+28=272+28+68=368129+235+171+16517+145+23+35=129+171+(235+165)=700=17+23+(145+35)=220400-25
18、6-44=400-(256+44)=100517-53-47=517-(53+47)=417284-159-41258-42-16=284-(159+41)=84545-167-145=545-145-167=233478-47-178=478-178-47=253344-(144+37)=344-144-37=163236-(177+36)=236-36-177=234545=45(45)=902352=23(52)=23025948(12513)=812513=13000(250125)(48)=2504(1258)=1000000=2549=90088125721251256425=11
19、(8125)=11000=9(8125)=9000=1258(825)=1000004212585=425(8125)=21000025488125=10011(8125) =1240+5040(12+50)40=1100000=2480125(40-4)=12540-1254=45007610318125=76(100+3)=76100+376=7828=(10+8)125=10125+8125=2250254442259999978=25(40+4)=(40+2)25=(100-1)9=9100-9=891=(100-1)78=7800-78=7722=2540+254 =4025+225
20、=1100=10504537+3755=(45+55)37=37002821+28791723-237=(21+79)79=7900=(17-7)23=2303846+6438=(46+64)38=110389932+32=(99+1)32=320046+4659=(59+1)46=2760=(10+100)38=3810+38100=41801672+1673+1675=(2+3+5)167=1670398+639-39436049=360(49)=10=(8+6-4)39=390250526001258005848054817. .=250(52)=600(125)=80085=48048
21、5=25=10=20=2240512=240125=442035=42075=12117+392+60888272712=117+(392+608) =(88+12)27=1117=270087538747=(53+47)87=8700775725=(75-25)7=3502346634=234-34-66=1345285347=528-(53+47)=428435(135189)=435-135-189=11116725322525=(167+32+1)25=5000389938=(99+1)38=380014714799=(99+1)147=1470025(48)=254+825=3001
22、0875352017598=(100+8)75=8100=35(200+1)=7035=75(100-2)=73502574=2547=700212586=26(1258)=120002532125=254(8125)=1000001258825483500425=3500(425)=35=25811=11000=2586=600420352302557028241159=420(352) =30+70+255=282+(41+159)=482=60=35588272712=(88+12)27=27006.3 1.8=6.30.92=3.512564+12536=(64+36)125=1250
23、06419964=64(199+1)=128005285347=528-(53+47)=428158395105=158+(395+105)=658480025=4810025=484(13856)(456)=13(84)(55)(66)=262.1 99 2.1=2.1(99+1)=210=1920.184.260.184.26=4.26+4.26+(0.18-0.18)=8.52810047516800120=(12000+4800)120=140=(81x100)4(25x3)=813x(100425)18. .124824=1248122=52315015=315053=210(100
24、00-1000-100-10)10=1000010-100010-10010-1010=1000-(100+10+1)=88913829362107=138+62+(293+107)=50099+999+9999+99999=(99+1)+(999+1)+(9999+1)+(99999+1)-4=11109666.868.661.34=66.88-(8.66+1.34)=56.8888118910 0.432 2.56898199=98(200-1)=19502=(8900-89)89 =10-(0.432+2.568)=99=725 6.8 0.04=250.046.8=6.8355+260
25、+140+245102992125=355+245+(260+140) =99(100+2) =2525=1000=10098=250645-180-245=645-245-180=220125322546=12584=4000=25(40+6)1150101569926382101-382=382(101-1)=38200=(100+1)56=5656=(100-1)26=2574460508=450(608)=96000930 0.65=930(0.65)=3101022478422=1022-(478+422)=12263.4 2.5 0.4 2357183317357=63.4(2.5
26、0.4) =2357-357-(183+317)6723664=672-36-36+36+64=(672-72)+(36+64)=700=63.4=150036643664=(36-36)+(64+64)=12850025734143755-287+87=500-(257+34)-143=57=755-(287-87)=5551814378422=1814-(378+422)=1014899989=(99+1)89=89003999+498=(4000-1)+(500-2)=4000+500-1-2 =4497568(68178)=568-68-1788822522512=(88+12)225
27、=225006982919=698-(291+9)=398=3223821653582=382-82+(165+35)=5001552564598=(155+45)+256-(100-2)=200+256-100+2=358759-126-259=759-259-126=374216+89+117599+275=75(99+2)=75100+751=7575=216+(89+11)=31619. .1050157=1050(157)=1072002430=7200(2430)=10219 99=219(100-1)=219100-2191=2168158 10176 1027846+78541
28、6912323169=58(100+1) =76(100+2) =(46+54) 78=(123-23) 169=5858=7752=78005651+5648+56=(51+48+1) 56=5600=16900129101129=(101-1) 129=1290012525322425=1258(254) =8253=100000= 300514+189214=514-214+189=489732254332=732-332-254=14656254125=425(8125) 7=7000002473+2624228+(72+189)109+(291176)=(74+26) 24=228+72+189=489=109+291-176=324=2400(375+1034)+(966+125) (2130+783+270)+1017=(375+125)+(1034+966) =2130+270+(783+1017)=2500 =4200致力于打造全网一站式需求,为大家助力来源网络仅供参考欢迎您下载我们的文档20.