小学数学简便运算练习题和答案要想运用运算定律做好简便运算，要注意以下几点： 1、要仔细观察算式，如果算式里只有乘法，一般用到乘法交换和结合律，如果只有加法，一般用到加法交换和结合律，如果既有加又有乘，一般用到乘法分配律。
当然要注意一些变式。
2、还要观察算式里面的特殊数字，如25和4,125和8,2和5等，有时101可以变成，想想如何利用好这些特殊数字。
3、要熟练掌握运算定律的字母表示形式，并注意多动脑思考。
简便运算越做越有趣，祝大家学得开心。
乘法交换律：a×b＝b×a 乘法结合律：×c＝a×8×25×42×125×5×17× ××4×538×125×8××4×289××125×乘法交换律和结合律的变化练习125×6125×84×125×225×28加法交换律：a＋b＝b＋a 加法结合律：＋c＝a＋57＋288＋14158＋395＋10167＋289＋3129＋235＋171＋165 378＋527＋7 169＋78＋22＋39＋42＋61 138＋293＋62＋107乘法分配律：×c＝a×c＋b×c 正用练习×25×25×25× 15×乘法分配律正用的变化练习：36×25×4139×101125×88201×24乘法分配律反用的练习：34×72＋34×28×37＋65×85×82＋85×15×97＋25×36×25＋25×24乘法分配律反用的变化练习：38×29＋38×299＋7564×199＋64☆思考题：其他的一些简便运算。
六年级简便运算100道带答案1. 125 × 8 = 10002. 45 × 20 = 9003. 56 × 50 = 28004. 75 × 4 = 3005. 36 × 25 = 9006. 72 ÷ 9 = 87. 63 ÷ 7 = 98. 81 ÷ 9 = 99. 144 ÷ 12 = 1210. 200 ÷ 25 = 811. 21 × 30 = 63012. 80 × 60 = 480013. 54 × 90 = 4014. 66 × 70 = 462015. 120 × 3 = 36016. 96 ÷ 16 = 617. 88 ÷ 11 = 818. 99 ÷ 11 = 919. 121 ÷ 11 = 1120. 160 ÷ 20 = 821. 32 × 40 = 128022. 50 × 70 = 350024. 64 × 50 = 320025. 140 × 5 = 70026. 108 ÷ 12 = 927. 126 ÷ 18 = 728. 144 ÷ 16 = 929. 180 ÷ 30 = 630. 220 ÷ 20 = 1131. 45 × 40 = 180032. 60 × 90 = 540033. 78 × 80 = 624034. 81 × 20 = 162035. 180 × 2 = 36036. 132 ÷ 11 = 1237. 156 ÷ 12 = 1338. 198 ÷ 18 = 1139. 216 ÷ 24 = 940. 240 ÷ 40 = 641. 56 × 30 = 168042. 70 × 80 = 560043. 63 × 90 = 567044. 88 × 50 = 440045. 200 × 4 = 80046. 168 ÷ 14 = 1248. 225 ÷ 25 = 949. 243 ÷ 27 = 950. 260 ÷ 20 = 1351. 72 × 40 = 288052. 90 × 60 = 540053. 81 × 70 = 567054. 99 × 50 = 495055. 240 × 3 = 72056. 176 ÷ 16 = 1157. 189 ÷ 21 = 958. 204 ÷ 17 = 1259. 234 ÷ 26 = 960. 280 ÷ 40 = 761. 84 × 30 = 252062. 100 × 80 = 800063. 54 × 70 = 378064. 77 × 60 = 462065. 300 × 2 = 60066. 180 ÷ 18 = 1067. 207 ÷ 23 = 968. 222 ÷ 18 = 1269. 264 ÷ 24 = 1170. 300 ÷ 50 = 672. 110 × 70 = 770073. 45 × 90 = 405074. 88 × 70 = 616075. 350 × 3 = 105076. 192 ÷ 24 = 877. 216 ÷ 24 = 978. 234 ÷ 26 = 979. 266 ÷ 26 = 1080. 320 ÷ 40 = 881. 108 × 30 = 324082. 120 × 90 = 1080083. 63 × 80 = 504084.84. 66 × 60 = 396085. 400 × 4 = 1600 . 204 ÷ 28 = 787. 238 ÷ 26 = 988. 264 ÷ 28 = 989. 294 ÷ 42 = 790. 360 ÷ 60 = 691. 120 × 40 = 480092. 130 × 80 = 1040093. 78 × 90 = 702095. 450 × 2 = 90096. 228 ÷ 38 = 697. 252 ÷ 28 = 998. 280 ÷ 28 = 1099. 312 ÷ 48 = 6100. 400 ÷ 50 = 8当然，让我们继续丰富这份文档，为同学们提供更多关于简便运算的指导和鼓励。
六年级简便运算练习题及答案一、口算。
10－2.65＝7.350÷3.8＝09×0.08＝0.74÷0.4＝607.5＋0.25＝67.756＋14.4＝20.40.77＋0.33=1.111311135－1.4－1.6=5-3=280×0.125=80*=10 ÷3×=*×=8773749二、用简便方法计算下面各题。
122221125－99998+124+3.2＋5+6.12－00÷125÷825×357512222=1125-=+ =+=12-2－1 =400÷=25*8*333557252=1125-1000+=1000+1244=10+10=20 =10-1==400÷1000= =200*37=7400 75=125+3=1=22441344131×121×2×× 125×8..35＋4.25＋3.65＋3.7.4×99＋3.464157346444137=*1 =×2×=34×2＋34× =125*=+=3.4*4241574342474=*1 =*2=68+1=125*8+125*0.8=8+8=16=3.4*100=3404154744=1 =1*2==81=1000+100=1100 15155357152－3－÷2＋×0.125×0.25×32.3－2.45－5.3－4.5646951195537115211=17.15- =17－4－=÷＋× =**32=22.3-5.3-649511984317552=17.15-10=13-3= =*＋× =1 =17-7=104911119 7255=7.1 =×=9111111757115134533×724.25－3－187.7×11－187.3×＋57.125×－0.51×7－1÷4)12182482266411757111141351453=×72＋×72+×72=4+1- =187.7*=43×＋57×－=315×44544413133232712445=2.42*+4.58×-*1 =2*6＋2* =11－ =4+3+6+=+5+3=5－2-1993332525555574137322375= =2*2*6=11－8==4+5+=10+9=19=2- 12=1 12325855554=*6==10+10=2017.15－8.47－1.5317353253645353445114+2.25+5+77+4+2－1+1+－3+1 +1 0.75+ +0.37-2-1 84575117117979784171731533513=4+2+5+=7+2+=5311+1611 －167=27－3+=+++ =5-4844848351344315354=4+5+=10+=70-－7=+5=5=++==5-4=184477448853=10+10=20 =1 =5374444415515135344＋+99+9999.3-1-×4.25+÷0.625×0.5++ ×62.5%31 ×7÷31 1+5555666482813857511151515441533544==9*4+4* =*+** =31 ÷31×7=1-1)66881357644682828533511511444554=11107=48-20=28=*=* =1×7=7=1-1+13135101066482257=10*99993117178172.5× 2× +25×75%-7×0.7 0.25×63.5×13×2.5-×+11125-99101010104421521599817854413= =15+27=18423519333111171171781*4*=22*+25*-7* =*63-*1=6*2-2* =39+19+=1125-1044442421522158599371111771=*4*=10*==*= =* =*2=5+5=10 =1125-1000+21010424221515211 =*50=1 =2*= =125+4=12922=23331714547743 ÷[56×].5×10-×0. ×+÷+5×97×－37.5%+104×0.378521119197119158137433333331714577=[110+]/=49*-49×=×4+* + =45* =897×－+104×521119191111259155888133743 = =45*+45*-45* =× =÷=49255=1110*1=4912*10=4=314×3.5×1174+1.25×210 +3.8÷5=133311174*=32*14+14*210+345*54=0 =*4=*4=*4563×9991×9755+299611191991558711*11= =35+12-27=20 =×38=1000×38=37572×156-56×725×32×12509×99+7099×101 =72*=25**12=709=72*100=25*8* =709*100 =7200 =200*500=100000 =70900439+100146+295888+9992100÷20133126.6+2.5×675.3×99+75..6×3.7+54×0.30.125××8.25+12.5% .37-3.25-2548131313111=2*6+2*6=75.3* =4.6*3.7+5.4*3.7=*+*8+ =8.37-1.37-52584848133131==75.3*100=*3.7= =7-5=2558441611=2*1=7530 =10*3.7=*2=584566=*=33=3257123323353116―115―4.25― 19.82―6.57―3.4.6+3+5.+2.25+5+.63÷2.5÷6÷0.2833144558847123132335131=11-=15-=19.82-=4.6+5.4+=4+5+=9.63/=6/33144455884447733=11-= =15-10= =19.82-10=9.82=10+10=20 =10+10=20 =9.63/10=0.9=6*4=28814143551755585104522143－－×+××+÷18× ×7+×5×86121212771516276335755351159452114=3- = =*+* =18*+18*=* =*24-* 121278832271096312125511112114=3-1== =*+* =2*4+3*=*12=2-=1323231515111 =+= =8+15=2=2*4=663分数简便计算2014六年级小学数学简便运算归类练习明确四点：姓名A、一般情况下，四则运算的计算顺序是：有括号时，先算，没有括号时，先算，再算只有同一级运算时，从左往右。
