四年级下册数学简便计算题

1、四年级下册数学简便计算题26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400-256-44517-53-47284-159-41258-42-16545-167-145478-47-178344- (144+37)236- (177+36)第三类：乘45X4X 523 X5X 225X9X48X (125X 13)(250X 125) X ( 4X8)88 12572X125125X64X2542 125 8 525

2、4 88 125第四类：乘(12+50) X40125X (40-4)76X 10318X12525X4442X2599X999 78第五类：乘45X37+37X 5528X21+28X7917X23-23X 738X46+64X 3899X 32+3246+46 X 59167X 2+167X 3+167X 539X 8+6x 39-39X 428X225-2X225-6X225(42+25) X125+ (18+15) X 12523 2 4+25 4 2+27 1 8+25 8 1 99 22+33 34第六类：除360+4 + 9250 + 5 + 2600+12+5800+5 + 8

3、480+5 + 48240 + 5+12420+352400 + 257800+12第七类：加减92+99197+102354-108405-99127-98323+189-123248+86-48+97+99)672-36+64 (6467-832) + (1832-1467)1530+( 592-530)-192 (2+4+6+ +98+100)-(1+3+5+第八类：乘除960X46 + 4899000+121 X113702 X 38+1234640+ (16+ 4)1000+ (125+4)第九类：加减乘除(98+147) +49(230-23) +23(250-25) +25173

4、6+ 28+1064+ 28125X ( 860+240+ 12)700+612+ 12X 4(37+15) X 85+13602005X 20062006-2006X 2005200542x 125X 8X525X4X88X125(12+50) X40125X (40-4)86X10318X12525X4442X2599X999X7845X38+38X5528X21+28X 7937X23-23X738X46+64X3899X 32+3246+46X 59167X2+167X3+167X539 8+6 39-39 428 225-2 225-6 225(42+25) X125+ (18+15

5、) X12565+73+135357+288+143272+68+28129+235+171+16517+145+23+35400-256-44517-53-47284-159-41258-42-16545-167-145478-47-178344- (144+37)236- (177+36)45X4X523 X5X225X9X48X ( 125X 13)(250X 125) 乂 (4X8)88 12572 125125X64X2542X125X8X525X4X88X 125(12+50) x 40125 X (40-4)76 10318 12525X4442 y2599刈99X7845 &g

6、t;37+37 >5528>21+28X7917 >23-23 汉38 >46+64 >3899>32+3246+46 >59167 >2+167 >3+167 >539X8+6 刈9-39 4360 m 闻250H5攵600T2W800 代由480+5 + 48240+5+12420 + 35117+392+60888X27+ 27X 1287X53+87X477X75 7X2523466 345285347435 (135+ 189)167X25+32X25 + 2538X99+38147+147X9925X (4+8)108X7

7、535X20175X9825 7 42X 125X8X625X32X 125125 8825 483500 +4+ 25420+35 + 230 + 255+ 70282 41 15988X27 + 27X 126.3 + 1.8125X64+125X 3664X199+645285347158+395+10516800+ 1204800+ 25(13X8X5X 6) + (4X5X6)2.1 x 99 + 2.10.18 +4.26 -0.18 +4.268100+ 4+751248+243150+15(10000-1000-100-10) + 10138+293+62+10799+999+

8、9999+9999966.86 -8.66-1.348811+89100.432 2.56898 X 19925 X 6.8 X 0.04645-180-245125X3225X46101X5699X26382 101-3824X60X50X8930 + 0.6 +51022-478-422355+260+140+245102 X 992X 12563.4 + 2.5 + 0.42357- 183 317 357672-36 + 6436 + 64-36+64500-257- 34-143755-287+871814- 378 42289X 99+893999+49888X225+225X12

9、698-291-9568 (68+178)382+165+35 82155+256+ 45-98759-126-259216+89+1175X 99+2X751050T5H72002430219 9958 X017610278 >46+78 >54169 X12323X169129X101 12956X51+56 >48+56125 25 3224 25514+18921473225433256X25X4X 12524 X 74+26X 24228+ (72+189)109+ (291 176)(375+1034)+(966+125)(2130+783+270)+1017参考

10、答案第一类：加65+73+135=65+135+73=273129+235+171+165=129+171+(235+165)=7006+7+8+102+103+104357+288+143=357+143+288=78817+145+23+35=17+23+(145+35)=220272+68+28=272+28+68=368999+99+9+3=999+1+(99+1)+(9+1)=11109998+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400-256-44517-53-4

11、7284-159-41=400-(256+44) =100258-42-16 =258-(42+16) =200344- (144+37) =244-144-37=63第三类：乘45X 4X 5=45 X (4 X 5)=908X ( 125X 13)=8 125 13=13000=517-(53+47) =417545-167-145=545-145-167=233236- (177+36) =236-36-177 =2323 X5X2=23 (5 2) =230= 284-(156+41)=84478-47-178=478-178-47=23372 125=8 125 9=9000(250

12、X125) X ( 4X 8)=125 8 (250 4) =1000000125 64 25=125 8 (25 8) =20000025 9 4=25 4 9=900 88 125=8 125 11=1100042 125 8 5=42 5 (125 8)= 210000=10X125+8X125=2250125 X (40-4) =125 40-125 4 =540025X44 =25 4 11 =11025 4 88 125 =100 X (8 X 125) X 11 =1100000第四类：乘(12+50) X 40=12 40+50 40=88018 125=(10+8) X 12

13、576 103=76 (100+3)=76 100+76 3 =782842 2599 9=2 25 21=105099 X 78=(100-1)78=100 X 78-1 X 78 =7722第五类：乘45 X 37+37X5528X 21+28X7917X23-23X7=37 X +(45+55)=28 X (21+79)=23 X (17-7)=3700=2800=23038 X 46+64 X3899 32+3246+46 59=38 X (46+64)=32 (99+1)=46X ( 59+1)=38X110=3200=2760=38 X (100+10)=38X100+38X10=

14、4180167X 2+167X 3+167 X539 X 8+6 X 39-39X4=167 X (2+3+5)=39 X ( 8+6-4)=1670=39028 X 225-2 X 225-6 X 225(42+25) X 125+ (18+15) X 125=225 X ( 28-2-6)=125 X ( 42+18+25+15)=4500=1250023 2 4+25 4 2+27 1 8+258X 199X 22+33X 34=8X ( 23+25+27)=33 X ( 66+34)=600=3300第六类：除360 + 4+9250 + 5+2600+ 12+5=360 + ( 4X

15、9)=250 + (5X2)=600+(12X 5)=10=25=10800+5+8480 + 5+48240+5+ 12=800-8- 5=480+48+5=240+ 12+5=20=2=4420 + 352400 + 257800 12=420-7- 5=24005 5=78006 2=12=96=650第七类：加减92+99197+102354-108=92+(100-1)=197+(100+2)=354-(100+8)=92+100-1=197+100+2=354-100-8=191=299=246405-99127-98323+189-123=405-(100-1)=127-(100

16、-2)=323-123+189= 405-100+1=127-100+2=389=306=29248+86-48672-36+64(6467-832) + (1832-1467)=248-48+86=672-(36+64)=6467-1467+(1832-832)= 286=572=60001530+ (592-530)-192(2+4+6+98+100) -(1+3+5+=1530-530+(592-192)=(2-1)+(4-3)+ + (98-97) + (100-99)=1400=1 + 1+.+1+1=50+97+99)第八类：乘除1000+ ( 125+4)960X46+48=96

17、0 -48X46=920640+ ( 16+ 4)=640 T6 >4=160第九类：加减乘除(98+147) +49=98+49+147 + 49=599000 +121 X 11 =99000 + (121 + 11) =9000=1000+ 125X4=32(230-23) + 23=230 + 23-23+23=93702X 38+ 1234=1234 >3X38 T234=114(250-25) + 25=250 25-25 25=9700+612+ 12X4=700+612 TFM=700+204=9042005 X 20062006-2006 X 2005200517

18、36 + 28+1064 + 28 =(1736+1064) +28 =100(37+15) X 85+1360125X ( 860+240 + 12)=125 X 880=125X8X 110=110000=50 X85+2 >85+1360=2005 2006 10001-2006 2005 10001=4250+170+1360=5610+170=578042 125 8 5=025 4 88 125125X (40-4)86X 103=125 X 8X (42X5)=210000(12+50) X 40=100 11 (8 125) =1100000=12 40+50 40=68

19、0=125 40-125 4=4500=86 (100+3) =86 100+86 3=885818 125=(10+8)125=125 10+125 825 44 =25 4 11 =110042 25=2 25 21=1050=225099 999 7845 38+38 55=(45+55)38=380038 46+64 38=(46+64)38=3800=(100-1)9=100 9-9=91 28 21+28 79=(21+79)79=7900=(100-1)78=78 100-78=772237 23-23 7 =(37-7)23=690167 2+167 3+167 5=(2+3+

20、5)167=167099 32+32=(99+1)32=320046+46 59=(59+1)59=354039 8+6 39-39 4=(8+6-4)39=39028 225-2 225-6 225=(28-2-6)225=2500357+288+143(42+25) X 125+ (18+15) X 12565+73+135=12500=273=788272+68+28129+235+171+16517+145+23+35=272+28+68=129+171+(235+165)=17+23+(145+35)=368=700=220400-256-44517-53-47284-159-412

21、58-=400-(256+44)=517-(53+47)=284-(159+41)=100=417=84545-167-145478-47-178344- (144+37)=545-145-167=478-178-47=344-144-37=233=253=163236- ( 177+36)45 4 5235 2=236-36-177=45 (4 5)=23 (5 2)=23=90=23025X 9X 48X (125X13)(250 X 125) X ( 4X 8)=25X4X9=8 125 13=250 4 (125 8)=900=13000=1000000=(42+18)+(25+15)

22、 X125=65+135+7388 X 12572 125125 64 25=357+143+288=11X(8 X 125)=9X(8X 125)=125 8 (8 25)=11000=9000=10000042X 125X 8X 5 =42 5 (8 125) =210000 125X ( 40-4) =125X40-125X4 =450025 44 =25 (40+4) =25 40+25 4 =110045 37+37 55 =(45+55)37=370038 46+64 38 =(46+64)38=110X38 =(10+100)38=38 10+38 100 =4180167 &g

23、t;2+167 >3+167 为 =(2+3+5) X 167 =167025 4 88 125 =100 11 (8 125) =110000076 103=76 (100+3) =76 100+3 76=782842 25=(40+2)25=40 25+2 25=105028 21+28 79=(21+79)79=790099 32+32=(99+1)32=32002505299 9 =(100-1)9=9 100-9 =891(12+50) X 40=12 40+50 40 =248018 125=(10+8)125=10 125+8 125=225099 78=(100-1)78

24、=7800-78 =772217 23-23 7=(17-7)23=23046+46 59=(59+1)46=276039 8+6 39-39 4=(8+6-4)39=390360/沟=360寸4瀚) =10600 T2寸 800芍3480+5 + 48=250 寸5 X 2)=600 寸12X5)=800W 芍=480+48+5=25=10=20=2240+5+ 12420+35117+392+60888X 27 + 27X 12=240 + 12 + 5=420 +7+5=117+(392+608) =(88+12) X 27=4=12=1117=270087X 53+87X477X 75

25、-7X252346634=(53+47) X 87=(75-25) X 7=234-34-66=8700=350=134528-53-47435 ( 135+ 189)167X 25+32X 25+ 25=528-(53+47)=435-135-189=(167+32+1) X25=428=111=500038X 99+38147 + 147X 9925 X (4+8)=(99+1) X38=(99+1) X147=25 X 4+8 X 25=3800=14700=300108X 7535 X20175X 98=(100+8) X 75=35X(200+1)=75 X (100-2)=8100

26、=7035=735025 7 42 125 8 625 32 125=25 4 7=2 6 (125 8)=25 4 (8 125)=700=12000=100000125 8825 483500+4+25=25 8 11=25 8 6=3500 + (4 X 25)=11000=600=35420+35+230+255 + 70282 + 41 + 159=420 + (35 X 2)=30+70+255=282+(41 + 159)=60=355=48288X 27+27X 126.3 + 1.8125X 64+125X 36=(88+12)27=6.3+ 0.9 +2=(64+36) X

27、 125=2700=3.5=1250064 X 199+64528- 53-47158+395+ 105=64 X (199+1)=528-(53+47)=158+(395+105)=12800=428=6584800 + 25(13X8X5X6) + (4X5X6)2.1 X 99 + 2.1=48 M00 25=13X (8 + 4) X (5 + 5)X (6+6)=2.1 X (99+1)=48 4=26=210=1920.18 +4.26 -0.18 +4.268100+ 4+7516800+ 120=4.26+4.26+(0.18-0.18)= (81x100 )+ 4+ (25x

28、3 )= (12000+4800)=8.52=81 + 3x (100+4+25)=1401201248 + 24=1248 T2 也=523150+15=3150=210( 10000-1000-100-10) + 10=10000 0-1000 10-100 10-10 10138+293 + 62+ 107 =138+62+(293+107) =500=1000- (100+10+1 )=88999+999+9999+99999=(99+1) + (999+1) + (9999+1) +(99999+1)-4 =11109666.86-8.66-1.348811 + 8910 0.432

29、 2.56898X 199=66.88-(8.66+1.34)=(8900-89) 89 =10-(0.432+2.568)=56.88=99=7=98 X (200-1)=1950225 X 6.8 X 0.04355+260+140+245102X 992X 125=25 0.04 6.8=6.8645-180-245=645-245-180=355+245+(260+140)=1000125 32=125 8 4=99 (100+2) =2 5 25=10098=25025 46=25 (40+6)=220=40001150101 56 =(100+1)56=56564 60 50 89

30、9 26=(100-1)26=2574930 + 0.6 +5382 101-382=382 (101-1)=382001022-478-422=4X 50X (60 X 8)=930+(0.6 X 5)=1022- (478+422)=96000=310=12263.4 + 2.5 + 0.4 =63.4 + (2.5 X 0.4) =63.436+ 64-36+64 =(36-36)+(64+64) =1281814-378- 422 =1814-(378+422) =101488 X 225+225 X 12 =(88+12) X 225 =225002357-183-317- 357 =2357-357-(183+317) =1500500-257-34- 143 =500-(2