四年级下册数学简便计算题.doc
-/四年级下册数学简便计算题第一类:加 65+73+135 357+288+143 272+68+28 129+235+171+165 17+145+23+35 999+99+9+3 6+7+8+102+103+104 9998+3+99+998+3+9 第二类:减 400-256-44 517-53-47 284-159-41 258-42-16 545-167-145 478-47-178 344-(144+37) 236-(177+36) 第三类:乘 4545 23 52 2594 8(12513) (250125)(48) 88125 72125 1256425 4212585 25488125 第四类:乘 (12+50)40 125(40-4) 76103 18125 2544 4225 999 9978 第五类:乘 4537+3755 2821+2879 1723-237 3846+6438 9932+32 46+4659 1672+1673+1675 398+639-394 28225-2225-6225 (42+25)125+(18+15)125 2324+2542+2718+2581 9922+3334 第六类:除 36049 25052 600125 80058 480548 240512 42035 240025 780012 第七类:加减 92+99 197+102 354-108 405-99 127-98 323+189-123 248+86-48 672-36+64 (6467-832)+(1832-1467) 1530+(592-530)-192 (2+4+6+98+100)-(1+3+5+97+99) 第八类:乘除 9604648 9900012111 3702381234 640(164) 1000(1254) 第九类:加减乘除 (98+147)49 (230-23)23 (250-25)25 173628+106428 125(860+24012) 700+612124 (37+15)85+1360 200520062006-200620052005 4212585 25488125 (12+50)40 125(40-4) 86103 18125 2544 4225 999 9978 4538+3855 2821+2879 3723-237 3846+6438 9932+32 46+4659 1672+1673+1675 398+639-394 28225-2225-6225 (42+25)125+(18+15)125 65+73+135 357+288+143 272+68+28 129+235+171+165 17+145+23+35 400-256-44 517-53-47 284-159-41 258-42-16 545-167-145 478-47-178 344-(144+37) 236-(177+36) 4545 23 52 2594 8(12513) (250125)(48) 88125 72125 1256425 4212585 25488125 (12+50)40 125(40-4) 76103 18125 2544 4225 999 9978 4537+3755 2821+2879 1723-237 3846+6438 9932+32 46+4659 1672+1673+1675 398+639-394 36049 25052 600125 80058 480548 240512 42035 117+392+608 88272712 87538747 775725 2346634 5285347 435(135189) 16725322525 389938 14714799 25(48) 10875 35201 7598 2574 212586 2532125 12588 2548 3500425 420352 3025570 28241159 88272712 6.3 1.8 12564+12536 6419964 5285347 158395105 480025 (13856)(456) 2.1 99 2.1 0.18 4.26 0.18 4.26 8100475 16800120 124824 315015 (10000-1000-100-10)10 13829362107 99+999+9999+99999 66.868.661.34 881189 10 0.432 2.568 98199 25 6.8 0.04 355+260+140+245 10299 2125 645-180-245 12532 2546 10156 9926 382101-382 460508 930 0.6 5 1022478422 63.4 2.5 0.4 2357183317357 6723664 36643664 50025734143 755-287+87 1814378422 899989 3999+498 8822522512 6982919 568(68178) 3821653582 1552564598 759-126-259 216+89+11 7599+275 1050157 72002430 219 99 58 101 76 102 7846+7854 16912323169 129101129 5651+5648+56 1252532 2425 514+189214 732254332 56254125 2474+2624 228+(72+189) 109+(291176)(375+1034)+(966+125) (2130+783+270)+1017 参考答案第一类:加 65+73+135 357+288+143 272+68+28 =65+135+73 =357+143+288 =272+28+68=273 =788 =368129+235+171+165 17+145+23+35 999+99+9+3=129+171+(235+165) =17+23+(145+35) =999+1+(99+1)+(9+1)=700 =220 =11106+7+8+102+103+104 9998+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 400-256-44 517-53-47 284-159-41 =400-(256+44) =517-(53+47) = 284-(156+41)=100 =417 =84 258-42-16 545-167-145 478-47-178 =258-(42+16) =545-145-167 =478-178-47=200 =233 =233344-(144+37) 236-(177+36) =244-144-37 =236-36-177=63 =23第三类:乘 4545 23 52 2594 =45(45) =23(52) =2549=90 =230 =9008(12513) (250125)(48) 88125 =812513 =1258(2504) =812511=13000 =1000000 =1100072125 1256425 4212585 =81259 =1258(258) =425(1258)=9000 =200000 = 21000025488125=100(8125) 11=1100000 第四类:乘 (12+50)40 125(40-4) 76103 =1240+5040 =12540-1254 =76(100+3)=880 =5400 =76100+763 =782818125 2544 4225 999 =(10+8)125 =25411 =22521 =10125+8125=2250 =110 =10509978 =(100-1) 78=10078-178 =7722第五类:乘 4537+3755 2821+2879 1723-237 =37+(45+55) =28(21+79) =23(17-7)=3700 =2800 =2303846+6438 9932+32 46+4659 =38(46+64) =32(99+1) = 46(59+1)=38110 =3200 =2760=38(100+10)=38100+3810=41801672+1673+1675 398+639-394 =167(2+3+5) =39(8+6-4)=1670 =39028225-2225-6225 (42+25)125+(18+15)125 =225(28-2-6) =125(42+18+25+15)=4500 =125002324+2542+2718+2581 9922+3334 =8(23+25+27) =33(66+34)=600 =3300第六类:除 36049 25052 600125 =360(49) = 250(52) =600(125)=10 =25 =1080058 480548 240512=80085 =480485 =240125=20 =2 =4 42035 240025 780012 =42075 =240055 =780062=12 =96 =650第七类:加减 92+99 197+102 354-108 =92+(100-1) =197+(100+2) =354-(100+8)=92+100-1 =197+100+2 =354-100-8=191 =299 =246405-99 127-98 323+189-123 =405-(100-1) =127-(100-2) =323-123+189= 405-100+1 =127-100+2 =389=306 =29248+86-48 672-36+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) =(2-1)+(4-3)+(98-97)+(100-99)=1400 =1+1+.+1+1 =50第八类:乘除 9604648 9900012111 3702381234 =9604846 =99000(12111) =12343381234=920 =9000 =114 640(164) 1000(1254)=640164 =10001254=160 =32第九类:加减乘除 (98+147)49 (230-23)23 (250-25)25 =9849+14749 =23023-2323 =25025-2525=5 =9 =9173628+106428 125(860+24012) 700+612124 =(1736+1064) 28 =125880 =700+612344=100 =1258110 =700+204 =110000 =904(37+15)85+1360 200520062006-200620052005 =5085+285+1360 =2005200610001-2006200510001=4250+170+1360 =0=5610+170=5780 4212585 25488125 =1258(425) =10011(8125)=210000 =1100000(12+50)40 125(40-4) 86103 =1240+5040 =12540-1254 =86(100+3)=680 =4500 =86100+863=885818125 2544 4225 =(10+8) 125 =25411 =22521=12510+1258 =1100 =1050=2250999 9978 4538+3855 =(100-1) 9 =(100-1) 78 =(45+55) 38=1009-9 =78100-78 =3800 =91 =77222821+2879 3723-237 3846+6438 =(21+79) 79 =(37-7) 23 =(46+64) 38=7900 =690 =38009932+32 46+4659 1672+1673+1675=(99+1) 32 =(59+1) 59 =(2+3+5) 167=3200 =3540 =1670398+639-394 28225-2225-6225 =(8+6-4) 39 =(28-2-6) 225=390 =2500(42+25)125+(18+15)125 65+73+135 357+288+143 =(42+18)+(25+15) 125 =65+135+73 =357+143+288=12500 =273 =788272+68+28 129+235+171+165 17+145+23+35 =272+28+68 =129+171+(235+165) =17+23+(145+35)=368 =700 =220400-256-44 517-53-47 284-159-41 258-42-16 =400-(256+44) =517-(53+47) =284-(159+41)=100 =417 =84545-167-145 478-47-178 344-(144+37) =545-145-167 =478-178-47 =344-144-37=233 =253 =163236-(177+36) 4545 23 52 =236-36-177 =45(45) =23(52)=23 =90 =230 2594 8(12513) (250125)(48) =2549 =812513 =2504(1258)=900 =13000 =1000000 88125 72125 1256425 =11(8125) =9(8125) =1258(825)=11000 =9000 =1000004212585 25488125 (12+50)40 =425(8125) =10011(8125) =1240+5040=210000 =1100000 =2480125(40-4) 76103 18125 =12540-1254 =76(100+3) =(10+8) 125=4500 =76100+376 =10125+8125 =7828 =2250 2544 4225 999 9978 =25(40+4) =(40+2) 25 =(100-1) 9 =(100-1) 78=2540+254 =4025+225 =9100-9 =7800-78=1100 =1050 =891 =77224537+3755 2821+2879 1723-237 =(45+55) 37 =(21+79) 79 =(17-7) 23=3700 =7900 =230 3846+6438 9932+32 46+4659 =(46+64) 38 =(99+1) 32 =(59+1) 46=11038 =3200 =2760=(10+100) 38=3810+38100=41801672+1673+1675 398+639-394 36049 =(2+3+5) 167 =(8+6-4) 39 =360(49) =1670 =390 =1025052 600125 80058 480548 =250(52) =600(125) =80085 =480485=25 =10 =20 =2240512 42035 117+392+608 88272712 =240125 =42075 =117+(392+608) =(88+12) 27 =4 =12 =1117 =270087538747 775725 2346634 =(53+47) 87 =(75-25) 7 =234-34-66=8700 =350 =1345285347 435(135189) 16725322525 =528-(53+47) =435-135-189 =(167+32+1) 25=428 =111 =5000389938 14714799 25(48) =(99+1) 38 =(99+1) 147 =254+825=3800 =14700 =30010875 35201 7598 =(100+8) 75 =35(200+1) =75(100-2)=8100 =7035 =73502574 212586 2532125 =2547 =26(1258) =254(8125)=700 =12000 =10000012588 2548 3500425 =25811 =2586 =3500(425)=11000 =600 =35420352 3025570 28241159 =420(352) =30+70+255 =282+(41+159)=60 =355 =48288272712 6.3 1.8 12564+12536 =(88+12) 27 =6.30.92 =(64+36) 125=2700 =3.5 =125006419964 5285347 158395105 =64(199+1) =528-(53+47) =158+(395+105)=12800 =428 =658480025 (13856)(456) 2.1 99 2.1 =4810025 =13(84) (55) (66) =2.1(99+1)=484 =26 =210=1920.18 4.26 0.18 4.26 8100475 16800120 =4.26+4.26+(0.18-0.18) =(81x100)4(25x3) =(12000+4800)120 =8.52 =813x(100425) =140124824 315015 (10000-1000-100-10)10 =1248122 =315053 =1000010-100010-10010-1010=52 =210 =1000-(100+10+1)
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四年级
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四年级下册数学简便计算题
第一类:加
65+73+135 357+288+143 272+68+28
129+235+171+165 17+145+23+35 999+99+9+3
6+7+8+102+103+104 9998+3+99+998+3+9
第二类:减
400-256-44 517-53-47 284-159-41
258-42-16 545-167-145 478-47-178
344-(144+37) 236-(177+36)
第三类:乘
4545 23 52 2594
8(12513) (250125)(48) 88125
72125 1256425 4212585
25488125
第四类:乘
(12+50)40 125(40-4) 76103
18125 2544 4225 999
9978
第五类:乘
4537+3755 2821+2879 1723-237
3846+6438 9932+32 46+4659
1672+1673+1675 398+639-394
28225-2225-6225 (42+25)125+(18+15)125
2324+2542+2718+2581 9922+3334
第六类:除
36049 25052 600125
80058 480548 240512
42035 240025 780012
第七类:加减
92+99 197+102 354-108
405-99 127-98 323+189-123
248+86-48 672-36+64 (6467-832)+(1832-1467)
1530+(592-530)-192 (2+4+6+……+98+100)-(1+3+5+……+97+99)
第八类:乘除
9604648 9900012111 3702381234
640(164) 1000(1254)
第九类:加减乘除
(98+147)49 (230-23)23 (250-25)25
173628+106428 125(860+24012) 700+612124
(37+15)85+1360 200520062006-200620052005
4212585 25488125
(12+50)40 125(40-4) 86103
18125 2544 4225
999 9978 4538+3855
2821+2879 3723-237 3846+6438
9932+32 46+4659 1672+1673+1675
398+639-394 28225-2225-6225
(42+25)125+(18+15)125 65+73+135 357+288+143
272+68+28 129+235+171+165 17+145+23+35
400-256-44 517-53-47 284-159-41 258-42-16
545-167-145 478-47-178 344-(144+37)
236-(177+36) 4545 23 52
2594 8(12513) (250125)(48)
88125 72125 1256425
4212585 25488125 (12+50)40
125(40-4) 76103 18125
2544 4225 999 9978
4537+3755 2821+2879 1723-237
3846+6438 9932+32 46+4659
1672+1673+1675 398+639-394 36049
25052 600125 80058 480548
240512 42035 117+392+608 8827+2712
8753+8747 775-725 234―66―34
528―53―47 435-(135+189) 16725+3225+25
3899+38 147+14799 25(4+8)
10875 35201 7598
2574 212586 2532125
12588 2548 3500425
420352 30+255+70 282+41+159
8827+2712 6.3 1.8 12564+12536
64199+64 528―53―47 158+395+105
480025 (13856)(456) 2.1 99 + 2.1
0.18 +4.26 -0.18 +4.26 8100475 16800120
124824 315015 (10000-1000-100-10)10
138+293+62+107 99+999+9999+99999 66.86-8.66-1.34
881189 10 - 0.432 - 2.568 98199
25 6.8 0.04 355+260+140+245 10299 2125
645-180-245 12532 2546
10156 9926 382101-382
460508 930 0.6 5 1022-478-422
63.4 2.5 0.4 2357-183-317-357 672-36+64
36+64-36+64 500-257-34-143 755-287+87
1814-378-422 8999+89 3999+498
88225+22512 698-291-9 568-(68+178)
382+165+35-82 155+256+45-98
759-126-259 216+89+11 7599+275
1050157 72002430 219 99
58 101 76 102 7846+7854 169123—23169
129101—129 5651+5648+56 1252532 2425
514+189—214 732—254—332 56254125
2474+2624 228+(72+189) 109+(291—176)
(375+1034)+(966+125) (2130+783+270)+1017
参考答案
第一类:加
65+73+135 357+288+143 272+68+28
=65+135+73 =357+143+288 =272+28+68
=273 =788 =368
129+235+171+165 17+145+23+35 999+99+9+3
=129+171+(235+165) =17+23+(145+35) =999+1+(99+1)+(9+1)
=700 =220 =1110
6+7+8+102+103+104 9998+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
400-256-44 517-53-47 284-159-41
=400-(256+44) =517-(53+47) = 284-(156+41)
=100 =417 =84
258-42-16 545-167-145 478-47-178
=258-(42+16) =545-145-167 =478-178-47
=200 =233 =233
344-(144+37) 236-(177+36)
=244-144-37 =236-36-177
=63 =23
第三类:乘
4545 23 52 2594
=45(45) =23(52) =2549
=90 =230 =900
8(12513) (250125)(48) 88125
=812513 =1258(2504) =812511
=13000 =1000000 =11000
72125 1256425 4212585
=81259 =1258(258) =425(1258)
=9000 =200000 = 210000
25488125
=100(8125) 11
=1100000
第四类:乘
(12+50)40 125(40-4) 76103
=1240+5040 =12540-1254 =76(100+3)
=880 =5400 =76100+763 =7828
18125 2544 4225 999
=(10+8)125 =25411 =22521
=10125+8125=2250 =110 =1050
9978
=(100-1) 78
=10078-178 =7722
第五类:乘
4537+3755 2821+2879 1723-237
=37+(45+55) =28(21+79) =23(17-7)
=3700 =2800 =230
3846+6438 9932+32 46+4659
=38(46+64) =32(99+1) = 46(59+1)
=38110 =3200 =2760
=38(100+10)
=38100+3810
=4180
1672+1673+1675 398+639-394
=167(2+3+5) =39(8+6-4)
=1670 =390
28225-2225-6225 (42+25)125+(18+15)125
=225(28-2-6) =125(42+18+25+15)
=4500 =12500
2324+2542+2718+2581 9922+3334
=8(23+25+27) =33(66+34)
=600 =3300
第六类:除
36049 25052 600125
=360(49) = 250(52) =600(125)
=10 =25 =10
80058 480548 240512
=80085 =480485 =240125
=20 =2 =4
42035 240025 780012
=42075 =240055 =780062
=12 =96 =650
第七类:加减
92+99 197+102 354-108
=92+(100-1) =197+(100+2) =354-(100+8)
=92+100-1 =197+100+2 =354-100-8
=191 =299 =246
405-99 127-98 323+189-123
=405-(100-1) =127-(100-2) =323-123+189
= 405-100+1 =127-100+2 =389
=306 =29
248+86-48 672-36+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) =(2-1)+(4-3)+…+(98-97)+(100-99)
=1400 =1+1+...+1+1 =50
第八类:乘除
9604648 9900012111 3702381234
=9604846 =99000(12111) =12343381234
=920 =9000 =114
640(164) 1000(1254)
=640164 =10001254
=160 =32
第九类:加减乘除
(98+147)49 (230-23)23 (250-25)25
=9849+14749 =23023-2323 =25025-2525
=5 =9 =9
173628+106428 125(860+24012) 700+612124
=(1736+1064) 28 =125880 =700+612344
=100 =1258110 =700+204
=110000 =904
(37+15)85+1360 200520062006-200620052005
=5085+285+1360 =2005200610001-2006200510001
=4250+170+1360 =0
=5610+170=5780
4212585 25488125
=1258(425) =10011(8125)
=210000 =1100000
(12+50)40 125(40-4) 86103
=1240+5040 =12540-1254 =86(100+3)
=680 =4500 =86100+863
=8858
18125 2544 4225
=(10+8) 125 =25411 =22521
=12510+1258 =1100 =1050
=2250
999 9978 4538+3855
=(100-1) 9 =(100-1) 78 =(45+55) 38
=1009-9 =78100-78 =3800
=91 =7722
2821+2879 3723-237 3846+6438
=(21+79) 79 =(37-7) 23 =(46+64) 38
=7900 =690 =3800
9932+32 46+4659 1672+1673+1675
=(99+1) 32 =(59+1) 59 =(2+3+5) 167
=3200 =3540 =1670
398+639-394 28225-2225-6225
=(8+6-4) 39 =(28-2-6) 225
=390 =2500
(42+25)125+(18+15)125 65+73+135 357+288+143
=[(42+18)+(25+15)] 125 =65+135+73 =357+143+288
=12500 =273 =788
272+68+28 129+235+171+165 17+145+23+35
=272+28+68 =129+171+(235+165) =17+23+(145+35)
=368 =700 =220
400-256-44 517-53-47 284-159-41 258-42-16
=400-(256+44) =517-(53+47) =284-(159+41)
=100 =417 =84
545-167-145 478-47-178 344-(144+37)
=545-145-167 =478-178-47 =344-144-37
=233 =253 =163
236-(177+36) 4545 23 52
=236-36-177 =45(45) =23(52)
=23 =90 =230
2594 8(12513) (250125)(48)
=2549 =812513 =2504(1258)
=900 =13000 =1000000
88125 72125 1256425
=11(8125) =9(8125) =1258(825)
=11000 =9000 =100000
4212585 25488125 (12+50)40
=425(8125) =10011(8125) =1240+5040
=210000 =1100000 =2480
125(40-4) 76103 18125
=12540-1254 =76(100+3) =(10+8) 125
=4500 =76100+376 =10125+8125
=7828 =2250
2544 4225 999 9978
=25(40+4) =(40+2) 25 =(100-1) 9 =(100-1) 78
=2540+254 =4025+225 =9100-9 =7800-78
=1100 =1050 =891 =7722
4537+3755 2821+2879 1723-237
=(45+55) 37 =(21+79) 79 =(17-7) 23
=3700 =7900 =230
3846+6438 9932+32 46+4659
=(46+64) 38 =(99+1) 32 =(59+1) 46
=11038 =3200 =2760
=(10+100) 38
=3810+38100
=4180
1672+1673+1675 398+639-394 36049
=(2+3+5) 167 =(8+6-4) 39 =360(49)
=1670 =390 =10
25052 600125 80058 480548
=250(52) =600(125) =80085 =480485
=25 =10 =20 =2
240512 42035 117+392+608 8827+2712
=240125 =42075 =117+(392+608) =(88+12) 27
=4 =12 =1117 =2700
8753+8747 775-725 234―66―34
=(53+47) 87 =(75-25) 7 =234-34-66
=8700 =350 =134
528―53―47 435-(135+189) 16725+3225+25
=528-(53+47) =435-135-189 =(167+32+1) 25
=428 =111 =5000
3899+38 147+14799 25(4+8)
=(99+1) 38 =(99+1) 147 =254+825
=3800 =14700 =300
10875 35201 7598
=(100+8) 75 =35(200+1) =75(100-2)
=8100 =7035 =7350
2574 212586 2532125
=2547 =26(1258) =254(8125)
=700 =12000 =100000
12588 2548 3500425
=25811 =2586 =3500(425)
=11000 =600 =35
420352 30+255+70 282+41+159
=420(352) =30+70+255 =282+(41+159)
=60 =355 =482
8827+2712 6.3 1.8 12564+12536
=(88+12) 27 =6.30.92 =(64+36) 125
=2700 =3.5 =12500
64199+64 528―53―47 158+395+105
=64(199+1) =528-(53+47) =158+(395+105)
=12800 =428 =658
480025 (13856)(456) 2.1 99 + 2.1
=4810025 =13(84) (55) (66) =2.1(99+1)
=484 =26 =210
=192
0.18 +4.26 -0.18 +4.26 8100475 16800120
=4.26+4.26+(0.18-0.18) =(81x100)4(25x3) =(12000+4800)120
=8.52 =813x(100425) =140
124824 315015 (10000-1000-100-10)10
=1248122 =315053 =1000010-100010-10010-1010
=52 =210 =1000-(100+10+1)
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