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1、六年级数学总复习简便计算练习题 一、口算。(10分)102.657.35 03.8 0 90.08 0.72 240.460 67.50.2567.75 614.420.4 0.770.33=1.151.41.6=5-3=2 800.125=80*=10 3=*=二、用简便方法计算下面各题。(90分,42052)1125997 998+1246 4+3.25+6.8 12(1+2) 4001258 25(378)=1125-(1000-3) =(998+2)+(1246-2) =(45)+(3.2+6.8)=12-21=400(125*8)=25*8*37=1125-1000+3 =1000+
2、1244 =10+10=20 =10-1=8 =4001000= =200*37=7400 =125+3=128 =2244()12 12 34(2) 1258.8 4.354.253.653.75 3.4993.4=()*12 =2 =34234 =125*(8+0.8) =(4.35+3.65)+(4.25+3.75)=3.4*(99+1)=*12 =()*2 =68+13 =125*8+125*0.8 =8+8=16 =3.4*100=340=1 =1*2=2 =81 =1000+100=110017.158.471.53 1734 2 0.1250.2532 22.32.455.34.
3、55=17.15-(8.47+1.53) =1743 = =*32 =22.3-5.3-(2.45+4.55)=17.15-10 =13-3=9 =* =1 =17-7=10=7.15 =()=(+)72 4.253(21) 187.711187.7 4357.1250.5 () =7272+72 =4+1-(3+2) =187.7*(11-1) =4357 =(*)=11*6+7*4+5*3 =6-6=0 =1887 =(4357-1) =*()=66+28+15 =*100=50 =*=1092.42+4.5843 6.62.5 4.6+5.4 2.8+7.2+ (+)=2.42*+4.5
4、8-*1 =2*62*6 =(+) =4+3+6+5 =(2.8+7.2)+5+3= -=(2.42+4.58-1) =2*2*6 =8=3 =4+5+(3+6)=10+9=19 =2- =1=*6=8 =10+10=20 +2.25+ + + + 0.75+0.375 5-=4+2+5+7 =+ =+ =+(+)=+ =5-(+)=4+5+(2+7)=10+ =70- =+5=5 =+(+)=2 =5-4=1=10+10=20 =14 =53+ 48.3- 4.25+6 0.6250.5+62.5% +(-1.8)=(1+9+99+999+9999) = 48.3-(+)=9*4+4* =*
5、+* = =+(-1)=11107 =48-20=28 =(9+)*4 =*(+1) =1= =-1+ =10*= =15+=182.5(+) 22+2575%-70.75 0.2563.5 2.5- +3.125+ 1125-996=2*4* =22*+25*-7* =*63-*13 =6*2-2*4 =+(3+)=1125-(1000-4)=*4*=10*=9 =(22+25+7)*= =*(63-13) =(6-4)*2 =5+5=10 =1125-1000+4 =*50=12 =2*=5 =125+4=129(111+999) 56(-) 49.5-(50-)0.6 + 45(+0.6
6、) 89737.5%+1040.375 =110+(1+999)/(56-56)=49*-49 =+*+ =45*(+-) =897+104 =(110+1000)(24-21) =49(10-) =(+1) =45*+45*-45* =(897-1+104)=1110* =49*10=495 =*11=7 =35+12-27=20 =(896+104)=1000=375(5.375) 3.5+1.25+3.8 72156-5672 2532125 70999+709 299101=*(5-5) =3*1+1*2+3* =72*(156-56) =25*(8*4)*125 =709(99+1)
7、 =0 =(3+2+3)* =72*100 =25*8*(4*125) =709*100 =(+2+)* =7200 =200*500=100000 =70900 =(+2+)*563999 7199 3755+2996 8439+1001 446+295 888+999 21002026.6+2.56 75.399+75.3 4.63.7+540.37 0.125+8.25+12.5% 8.37-3.25-(1.37+1.75) =2*6+2*6 =75.3*(99+1) =4.6*3.7+5.4*3.7 =*+*8+ =8.37-1.37-(3.25+1.75)=2(6+6) =75.3*
8、100 =(4.6+5.4)*3.7 =(+1) =7-5=2=2*12 =7530 =10*3.7 =*2=*=33 =371161 154.255 19.826.573.43 4.6+3+6+5.4 4+2.25+5+7 9.632.54 60.25=11-(6+1)=15-(4+5)=19.82-(6.57+3.43)=4.6+5.4+(3+6)=4+5+(2+7)=9.63/(2.5*4) =6/=11-8 =3 =15-10=5 =19.82-10=9.82 =10+10=20 =10+10=20 =9.63/10=0.963 =6*4=243 + + 18(+) 7+5 ()(24)=3-(+) =(+) =*+* =18*+18* =*(7+5) =*24-*=3-1=2 = =*+* =2*4+3*5 =*12 =2-=1 =+= =8+15=23 =2*4=8(+) (+) 7+5 () ()1511 12103450075 =(+1)* =/(+)