158+262+138375+219+381+225214+638+2863065－738－10652357－183－317－3572365－1086－214497－299370+995399+498883－398273-73-27856－(456－221)787-(87-29)365-(65+118)455-(155+239)100+45-100+45324-68+32672-36+64324-68-32700－201899+344487－287－139－61500－257－34－1432000－368－132568－(68＋178)155＋256＋45－98514+189－214369－256+156512+(373—212)897－72+28187+120+18+262乘法简便计算28X4X25125X32X259X72X12512X2525X24138X25X4(13X125)X(3X8)(12+24+80)X5088X12532X(25+125)102X7625X(8+4)25X(24+16)178X99+17832X12584X36+64X8475X98+2X7583X102－83X235X8+35X6-4X35(40+4)X2535X37+65X3731X(200+5)39X28+39X2225X40499X36+36125X25X8X48X17X12525X15X450X69X2135X50X2600-60三15736-35X2098-18X5+25280—80三4175-75三2580-20X2+6036-36三6-615X97+3100+1-100+11000+8-1000+8102+1-102+125+75-25+75简便计算练习题679X42+79+79X5726X39+61X2699X55＋5552X76+47X76+7648X52X2－4X4820X4三20X425X4三25X456X8三56X812X6三12X625X8三25X836X9三36X925X8三（25X8）48X99+15+95X2865+35X1340+360三20-10301X45356X9－56X978X101－78134X56－134+45X134102+1-102+1容易出错类型（共五种类型）695＋20864－19999X999+1999184+98738－301380+476+120(569+468)+(432+131)704X25256－147－53373－129+29189－(89+74)28X4X25125X32X259X72X125简便计算练习题7姓名得分720^16三5630三42456-(256-36)102X3598X42158+262+138375+219+381+2255001－247－1021－232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755－(2187+755)2214+638+2863065－738－1065899+3442357—183—317－3572365－1086－214497—2992370+1995简便计算练习题8姓名得分3999+4981883—39812X2575X24138X25X4(13X125)X(3X8)(12+24+80)X5025X32X12532X(25+125)88X125102X76178X101—17884X36+64X8475X99+2X7598X199123X18—123X3+85X12350X(34X4)X325X(24+16)178X99+17879X42+79+79X577300三25三48100三4三75158+262+13899+999+9999+999997755－(2187+755)2357－183－317－3572365－1086－214497－12X2575X24138X25X4704X2525X32X125简便计算练习题9姓名得分1248三243150^154800^2521500^125375+219+381+2255001－247－1021－232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755－(2187+755)2214+638+2863065－738－1065899+3442370+19953999+4981883－398简便计算练习题10姓名得分(13X125)X(3X8)(12+24+80)X5032X（25+125）88X125102X7658X98178X101－17884X36+64X8475X99+2X7583X102－83X298X199123X18－123X3+85X12350X（34X4）X325X（24+16）178X99+17821500^1257300^25三48100三4三7516800三120简便计算练习题11姓名得分（a＋b）＋c=a＋（b＋c）2.73＋0.89＋1.274.37＋0.28＋1.63＋5.72a－b－c=a－（b＋c）10－0.432－2.5689.3－5.26－2.7414.9－（5.2＋4.9）18.32－5.47－4.32（aXb）Xc=aX（bXc）得3.28X5.7＋6.72X5.72.1X99＋2.123X0.1＋2.3X9.90.18＋4.26－0.1＋4.20.5X1.340.58X1.37.3-4-4+2.7X3.7X0.5－2.7545.26X0.125＋a4b4c=ac)6.341.89.4（1.9X8）12.63.442.540.47.25X6.8X0.040.25X32X0.1256.4X1.25X12.5cX（a+b）=cXa＋cXb0.45X2010.58X10.150.2X994.7X9.9简便计算练习题12姓名0.252.740.4X1.6）93040.645＋1.54）40.7简便计算练习题13姓名得分6.9＋4.8＋3.115.89＋(6.75－5.89)7.85＋2.34－0.85＋4.6635.6－1.8－15.6－7.213.75－(3.75＋6.48)47.8－7.45+2.5566.86—8.66—1.340.25X16.2X40.25X32X0.1252.5X(4+0.4)(1.25－0.125)X84.8X100.14.2X9956.5X9.9＋56.57.09X10.8－0.8X7.093.83X4.56＋3.83X5.443.65X4.7－36.5X0.375.4X11-5.413.7X0.25—3.7三410.7X16.1—1.1X10.7+10.7X5运算定律和性质1、加法交换律：两个加数交换位置，和不变。这叫做加法交换律。用字母表示：a+b二b+a2、加法结合律：三个数相加，先把前两个数相加，或者先把后两...
