四年级下册数学简便计算题80942.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 实用文档.812513 25012548 88125 72125 1256425 4212585 25488125 第四类：乘 12+5040 12540-4 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 实用文档.28225-2225-6225 42+25125+18+15125 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 实用文档.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 640164 10001254 第九类：加减乘除 98+14749 230-2323 250-2525 173628+106428 125860+24012 700+612124 37+1585+1360 200520062006-200620052005 4212585 25488125 实用文档.12+5040 12540-4 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+25125+18+15125 65+73+135 357+288+143 272+68+28 129+235+171+165 17+145+23+35 实用文档.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 812513 25012548 88125 72125 1256425 4212585 25488125 12+5040 12540-4 76103 18125 2544 4225 999 9978 4537+3755 2821+2879 1723-237 实用文档. 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 435135189 16725322525 389938 14714799 2548 实用文档.10875 35201 7598 2574 212586 2532125 12588 2548 3500425 420352 3025570 28241159 88272712 6.3 1.8 12564+12536 6419964 5285347 158395105 480025 13856456 2.1 99 2.1 0.18 4.26 0.18 4.26 8100475 16800120 实用文档.124824 315015 10000-1000-100-1010 13829362107 99+999+9999+99999 881189 10 0.432 2.568 98199 25 6.8 355+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 实用文档.1814378422 899989 3999+498 8822522512 6982919 56868178 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 实用文档.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)实用文档.=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 =900812513 25012548 88125 =812513 =1258(2504) =812511=13000 =1000000 =1100072125 1256425 4212585 实用文档.=81259 =1258(258) =425(1258)=9000 =200000 = 21000025488125=100(8125) 11=1100000 第四类：乘 12+5040 12540-4 76103 =1240+5040 =12540-1254 =76(100+3)=880 =5400 =76100+763 =782818125 2544 4225 999 =10+8125 =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) = 4659+1=38110 =3200 =2760实用文档.=38(100+10)=38100+3810=41801672+1673+1675 398+639-394 =1672+3+5 =398+6-4=1670 =39028225-2225-6225 42+25125+18+15125 =22528-2-6 =12542+18+25+15=4500 =125002324+2542+2718+2581 9922+3334 =823+25+27 =3366+34=600 =3300第六类：除 36049 25052 600125 =36049 = 25052 =600(125)=10 =25 =1080058 480548 240512=80085 =480485 =240125=20 =2 =4 42035 240025 780012 =42075 =240055 =780062=12 =96 =650实用文档.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 640164 10001254=640164 =10001254实用文档.=160 =32第九类：加减乘除 98+14749 230-2323 250-2525 =9849+14749 =23023-2323 =25025-2525=5 =9 =9173628+106428 125860+24012 700+612124 =(1736+1064) 28 =125880 =700+612344=100 =1258110 =700+204 =110000 =90437+1585+1360 200520062006-200620052005 =5085+285+1360 =2005200610001-2006200510001=4250+170+1360 =0=5610+170=5780 4212585 25488125 =1258(425) =10011(8125)=210000 =110000012+5040 12540-4 86103 =1240+5040 =12540-1254 =86(100+3)=680 =4500 =86100+863=885818125 2544 4225 =(10+8) 125 =25411 =22521实用文档.=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 =250042+25125+18+15125 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 实用文档.=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 812513 25012548 =2549 =812513 =2504(1258)=900 =13000 =1000000 88125 72125 1256425 =11(8125) =9(8125) =1258(825)=11000 =9000 =1000004212585 25488125 12+5040 =425(8125) =10011(8125) =1240+5040=210000 =1100000 =248012540-4 76103 18125 =12540-1254 =76(100+3) =(10+8) 125=4500 =76100+376 =10125+8125 =7828 =2250 2544 4225 999 9978 实用文档.=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 =2700实用文档.87538747 775725 2346634 =(53+47) 87 =(75-25) 7 =234-34-66=8700 =350 =1345285347 435135189 16725322525 =528-(53+47) =435-135-189 =(167+32+1) 25=428 =111 =5000389938 14714799 2548 =(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 =482实用文档.88272712 6.3 1.8 12564+12536 =(88+12) 27 =2 =(64+36) 125=2700 = =125006419964 5285347 158395105 =64(199+1) =528-(53+47) =158+(395+105)=12800 =428 =658480025 13856456 2.1 99 2.1 =4810025 =13(84) (55) (66) =(99+1)=484 =26 =210=1920.18 4.26 0.18 4.26 8100475 16800120 =4.26+4.26+(0.18-0.18) =81x100425x3 =12000+4800120 =813x100425 =140124824 315015 10000-1000-100-1010 =1248122 =315053 =1000010-100010-10010-1010