四年級下冊數學簡便計算題

第一類：加

65+73+135357+288+143272+68+28

129+235+171+16517+145+23+35999+99+9+3

6+7+8+102+103+1049998+3+99+998+3+9

其次類：減

400-256-44517-53-47284-159-41

258-42-16545-167-145478-47-178

344-(144+37)236-(177+36)

第三類：乘

45X4X523X5X225X9X4

8X(125X13)(250X125)X(4X8)88X125

72X125125X64X2542X125X8X5

25X4X88X125

第四類：乘

(12+50)X40125X(40-4)76X103

18X12525X4442X2599X9

99X78

第五類：乘

45X37+37X5528X21+28X7917X23-23X7

38X46+64X3899X32+3246+46X59

167X2+167X3+167X539X8+6X39-39X4

28X225-2X225-6X225(42+25)X125+(18+15)X125

23X2X4+25X4X2+27X1X8+25X8X199X22+33X34

第六類：除

3604-44-92504-54-26004-124-5

8004-54-8480+5+482404-54-12

4204-3524004-2578004-12

第七類：加減

92+99197+102354-108

405-99127-98323+189-123

248+86-48672-36+64(6467-832)+(1832-1467)

1530+(592-530)-192(2+4+6+……+98+100)-(1+3+5+……+97+99)

第八類：乘除

960X464-48990004-121X113702X384-1234

6404-(164-4)10004-(1254-4)

第九類：加減乘除

(98+147)4-49(230-23)+23(250-25)+25

17364-28+10644-28125X(860+2404-12)700+6124-12X4

(37+15)X85+13602023X20232023-2023X20232023

42X125X8X525X4X88X125

(12+50)X40125X(40-4)86X103

18X12525X4442X25

99X999X7845X38+38X55

28X21+28X7937X23-23X738X46+64X38

99X32+3246+46X59167X2+167X3+167X5

39X8+6X39-39X428X225-2X225-6X225

(42+25)X125+(18+15)X12565+73+135357+288+143

272+68+28129+235+171+16517+145+23+35

400-256-44517-53-47284-159-41258-42-16

545-167-145478-47-178344-(144+37)

236-(177+36)45X4X523X5X2

25X9X48X(125X13)(250X125)X(4X8)

88X12572X125125X64X25

42X125X8X525X4X88X125(12+50)X40

125X(40-4)76X10318X125

25X4442x2599x999x78

45x37+37x5528x21+28x7917x23-23x7

38x46+64x3899x32+3246+46x59

167x2+167x3+167x539x8+6x39-39x436049

250+5+26004-124-5800K8480+5+48

2404-54-124204-35117+392+60888X27+27X12

87X53+87X477X75-7X25234—66—34

528-53-47435-(135+189)167X25+32X25+25

38X99+38147+147X9925X(4+8)

108X7535X20175X98

25X7X42X125X8X625X32X125

125X8825X4835004-44-25

4204-354-230+255+70282+41+159

88X27+27X126.391.8125X64+125X36

64X199+64528-53-47158+395+105

4800H-25(13X8X5X6)+(4X5X6)2.1x99+2.1

0.18+4.26-0.18+4.2681004-44-75168004-120

12484-2431504-15(10000-1000-100-10)4-10

138+293+62+10799+999+9999+9999966.86-8.66-1.34

88114-8910-0.432-2.56898X199

25X6.8X0.04355+260+140+245102X992X125

645-180-245125X3225X46

101X5699X26382X101-382

4X60X50X89304-0.64-51022-478-422

63.44-2.54-0.42357-183-317-357672—36+64

36+64—36+64500-257-34-143755-287+87

1814-378-42289X99+893999+498

88X225+225X12698-291-9568-(68+178)

382+165+35-82(375+1034)+(966+125)155+256+45—98

759-126-259216+89+1175X99+2X75

1050+15?77200+24-30219x99(2130+783+270)+1017

58x10176xl0278x46+78x54169x123—23x169

129x101—12956x51+56x48+56125X25X3224X25

514+189—214732—254—33256X25X4X125

24X74+26X24228+(72+189)109+(291—176)

參考答案

第一類：加

65+73+135357+288+143272+68+28

=65+135+73=357+143+288=272+28+68

=273=788=368

129+235+171+16517+145+23+35999+99+9+3

二129+171+(235+165)=17+23+(145+35)=999+1+(99+1)+(9+1)

=700=220=1110

6+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

其次類：減

400-256-44517-53-47284-159-41

=400-(256+44)=517-(53+47)=284-(156+41)

=100=417=84

258-42-16545-167-145478-47-178

=258-(42+16)=545-145-167=478-178-47

=200二233二233

344-(144+37)236-(177+36)

=244-144-37=236-36-177

=63=23

第三類：乘

45X4X523X5X225X9X4

=45X(4X5)=23X(5X2)=25X4X9

=90=230=900

8X(125X13)(250X125)X(4X8)88X125

=8X125X13二125X8X(250X4)=8X125X11

=13000=1000000=11000

72X125125X64X2542X125X8X5

=8X125X9=125X8X(25X8)=42X5X(125X8)

=9000=200000：=210000

25X4X88X125

=100X(8X125)XII

=11(X)000

第四類：乘

(12+50)X40125X(40-4)76X103

=12X40+50X40=125X40-125X4=76X(100+3)

=880=5400=76X100+76X3=7828

18X12525X4442X2599X9

=(10+8)X125=25X4X11=2X25X21

=10X125+8X125=2250=110=1050

99X78

=(100-1)X78

=100X78-1X78=7722

第五類：乘

45X37+37X5528X21+28X7917X23-23X7

=37X+(45+55)=28X(21+79)=23X(17-7)

=3700=2800=230

38X46+64X3899X32+3246+46X59

=38X(46+64)=32X(99+1)=46X(59+1)

=38X110=3200=2760

=38X(100+10)

=38X100+38X10

=4180

167X2+167X3+167X539X8+6X39-39X4

=167X(2+3+5)=39X(8+6-4)

=1670=390

28X225-2X225-6X225(42+25)X125+(18+15)X125

=225X(28-2-6)=125X(42+18+25+15)

=4500=12500

23X2X4+25X4X2+27X1X8+25X8X199X22+33X34

=8X(23+25+27)二33義(66+34)

=600=3300

第六類：除

360+4+9250+5+2600+12+5

=3604-(4X9)=250+(5X2)=600+(12X5)

=10=25=10

8004-54-84804-54-482404-54-12

=800+8+5二480+48+5=2404-124-5

=20=2=4

4204-3524004-2578004-12

=4204-74-5=24004-54-5=78004-64-2

=12二96二650

第七類：加減

92+99197+102354-108

=92+(100-1)=197+(100+2)=354-(100+8)

=92+100-1=197+100+2=354-100-8

=191=299=246

405-99127-98323+189-123

=405-(100-1)=127-(100-2)=323-123+189

=405-100+1=127-100+2=389

=306=29

248+86-48672-36+64(6467-832)+(1832-1467)

=248-48+86=672-(36+64)=6467-1467+(1832-832)

=286=572=6000

1530+(592-530)-192(2+4+6+……+98+100)-(1+3+5+……+97+99)

=1530-530+(592-192)=(2/)+(4-3)+???+(98-97)+(100-99)

=1400=1+1+...+1+1=50

第八類：乘除

960X46+48990004-121X113702X384-1234

=9604-48X46=990004-(1214-11)二1234x3x38X234

=920=9000=114

640+(164-4)10004-(125+4)

=6404-16x4=10004-125X4

=160=32

第九類：加減乘除

(98+147)+49(230-23)4-23(250-25)+25

=98+49+147+49=230+23-23+23=2504-25-254-25

=5=9=9

17364-28+10644-28；125X(860+2404-12)700+6124-12X4

=(1736+1064)+28=125X880=700+612+3=4x4

=100=125X8X110=700+204

=110000=904

(37+15)X85+13602023X20232023-2023X20232023

=50x85+2x85+1360=2023X2023X10001-2023X2023X10001

=4250+170+1360=0

=5610+170=5780

42X125X8X525X4X88X125

二125X8X(42X5)=100X11X(8X125)

=210000=1100000

(12+50)X40125X(40-4)86X103

=12X40+50X40=125X40-125X4=86X(100+3)

=680=4500=86X100+86X3

=8858

18X12525X4442X25

=(10+8)X125=25X4X11=2X25X21

=125X10+125X8=1100=1050

=2250

99X999X7845X38+38X55

=(100-1)X9=(100-1)X78=(45+55)X38

=100X9-9=78X100-78=3800

二91=7722

28X21+28X7937X23-23X738X46+64X38

=(21+79)X79二(37-7)X23=(46+64)X38

=7900=690=3800

99X32+3246+46X59167X2+167X3+167X5

=(99+1)X32=(59+1)X59=(2+3+5)X167

=3200=3540=1670

39X8+6X39-39X428X225-2X225-6X225

=(8+6-4)X39=(28-2-6)X225

=390=2500

(42+25)X125+(18+15)X12565+73+135357+288+143

=[(42+18)+(25+15)]X125=65+135+73=357+143+2

=12500=273=788

272+68+28129+235+171+16517+145+23+35

=272+28+68=129+171+(235+165)=17+23+(145+35)

=368=700=220

400-256-44517-53-47284-159-41258-42-16

=400-(256+44)=517-(53+47)=284-(159+41)

=100=417=84

545-167-145478-47-178344-(144+37)

=545-145-167=478-178-47=344-144-37

=233=253=163

236-(177+36)45X4X523X5X2

=236-36-177=45X(4X5)=23X(5X2)

二23=90=230

25X9X48X(125X13)(250X125)X(4X8)

=25X4X9=8X125X13=250X4X(125X8)

=900=13000=1000000

88X12572X125125X64X25

=11X(8X125)=9X(8X125)=125X8X(8X25)

=11000=9000=100000

42X125X8X525X4X88X125(12+50)X40

=42X5X(8X125))=100X11X(8X125)=12X40+50X40

=210000=1100000=2480

125X(40-4)76X10318X125

=125X40-125X4=76X(100+3)=(10+8)X125

=4500=76X100+3X76=10義125+8X125

=7828=2250

25X4442x2599x999x78

=25X(40+4)=(40+2)X25=(100-1)X9=(100-1)X78

二25X40+25X4=40X25+2X25=9X100-9=7800-78

=1100=1050=891=7722

45x37+37x5528x21+28x7917x23-23x7

=(45+55)X37=(21+79)X79=(17-7)X23

=3700=7900=230

38x46+64x3899x32+3246+46x59

=(46+64)X38=(99+1)X32=(59+1)X46

=110X38=3200=2760

=(10+100)X38

=38X10+38X100

=4180

167x2+167x3+167x539x8+6x39-39x4360+4+9

=(2+3+5)X167=(8+6-4)X39=360-(4x9)

=1670=390=10

2504-54-2600^124-5800?5：84804-54-48

=2504-(5X2)=600=(12X5)=800+8:5=480+48+5

二25=10=20=2

24095+124204-35117+392+60888X27+27X12

=2404-124-5=420+7+5=117+(392+608)=(88+12)X27

=4=12=1117=2700

87X53+87X477X75-7X25234-66-34

=(53+47)X87=(75-25)X7=234-34-66

=8700=350=134

528-53-47435-(135+189)167X25+32X25+25

=528-(53+47)=435-135-189=(167+32+1)X25

=428=111=5000

38X99+38147+147X9925X(4+8)

=(99+1)X38=(99+1)X147=25X4+8X25

=3800=14700=300

108X7535X20175X98

=(100+8)X75=35X(200+1)=75X(100-2)

=8100=7035=7350

25X7X42X125X8X625X32X125

=25X4X7=2X6X(125X8)=25X4X(8X125)

=700=12000=100000

125X8825X483500+4+25

=25X8X11二25X8X6=35004-(4X25)

=11000=600=35

420+35+230+255+70282+41+159

=4204-(35X2)=30+70+255=282+(41+159)

=60=355=482

88X27+27X126.3+1.8125X64+125X36

=(88+12)X27=6.34-0.94-2=(64+36)X125

=2700=3.5=12500

64X199+64528-53-47158+395+105

=64X(199+1)=528-(53+47)=158+(395+105)

=12800=428二658

48004-25(13X8X5X6)4-(4X5X6)2.1X99+2.1

=48x1004-25=13X(84-4)X(54-5)X(6+6)=2.1X(99+1)

=48x4=26=210

=192

0.18+4.26-0.18+4.268100+4+75168004-120

=4.26+4.26+(0.18-0.18)=(81x100)(25x3)=(12000+4800)4-120

=8.52=814-3x(1004-44-25)=140

12484-2431504-15(10000-1000-100-10)4-10

二1248X2:2二3150?5：3=100004-10-1000-?]0-1004-10-10-?10

=52=210=1000-(100+10+1)

=889

138+293+62+10799+999+9999+99999

=138+62+(293+107)=(99+1)+(999+1)+(9999+1)+(99999+1)-4

=500=111096

66.86—8.66—1.348811?8910-0.432-2.56898X199

=66.88-(8.66+1.34)=(8900-89)^89=10-(0.432+2.568)=98x(200-1)

=56.88=99=7=19502

25X6.8X0.04355+260+140+245102X992X125

=25X0.04X6.8=355+245+(260+140)=99X(100+2)=2x5x25

=6.8=1000=10098=250

645-180-245125X3225X46

=645-245-180=125X8X4=25X(40+6)

=220=40001150

101X5699X26382X101-382

=(100+1)X56=(100-1)X26=382X(101-1)

=5656=2574=38200

4X60X50X89304-0.6+51022-478-422

=4X50X(60X8)=930+(0.6X5)=1022-(478+422)

=96000=310=122

63.4+2.5+0.42357-183-317-357672-36+64

=63.44-(2.5X0.4)=2357-357-(183+317)=672-36-36+36+64

=63.4=1500=(672-72)+(36+64)

=700

36+64-36+64500-257-34-143755-287+87

=(36-36)+(64+64)=500-(257+34)-143=755-(287-87)

=128=57=555

1814—378—422