六年级数学简便计算练习题答案

1、六年级数学简便计算练习题答案六年级数学总复习简便计算练习题一、口算。(10 分)10-2.65 =7.350+3.8 = 09 x0.08 = 0.7224+0.4 =60 67.5 +0.25 =67.75 6 +14.4 =20.4 0.77 +0.33=1.15 1.4 1.6=5-3=280x0.125=80*=10+ 3x、用简便方法计算下面各题(90分，4x20+ 5x2)1125- 997998+12464+3.2+ 5+6.812-(1+2)400+125+ 825x (37x 8)= 1125- (1000-3) = (998+2) +(1246-2) = (4+5) + (

2、3.2+6.8 )= 12-2-1=400+ ( 125*8) =25*8*37=1125-1000+3=1000+1244=10+10=20= 10-1=8=400+1000=200*37=7400=125+3=128=2244六年级数学简便计算练习题答案(一)x 121 x2x 34 x(2 +)125 x8.84.35 + 4.25 + 3.65 + 3.753.4x 99+3.4=(-)*12 = x2x=34x2 + 34x =125*(8+0.8)=(4.35+3.65 ) + (4.25+3.75 ) =3.4* (99+1)=*12=(x) *2=68+13= 125*8+12

3、5*0.8 =8+8=16=3.4*100=340=1=1*2=2=81=1000+100=110017.15-8.47 -1.5317-3-4+2+x0.125 x 0.25 x3222.3-2.45 -5.3 -4.55= 17.15- (8.47+1.53 )=17-4-3=+ + x =*32=22.3-5.3-(2.45+4.55 )六年级数学简便计算练习题答案+ x(+ ) x =11 187.743= 17.15-10=13-3=9=1=17-7=10=7.15( + +)x724.253(2 1)187.7x + 57.125 x 0.5x(一)= x72+x 72+x72 =

4、4+1-(3+2)=187.7*(11-1 )=43x(-*)= 11*6+7*4+5*3=6-6=0=1887=(43+ 57-1 )=*(x + 57 x =66+28+15 =*100=50*一= 1092.42 +4.58 x 4 + 3 x 6.6+2.5 x 4.6+5.42.8+7.2+-(+)=2.42*+4.58 x-*1=2*6+2*6= (+) =4+3+6+5 =(2.8+7.2 ) +5+3=-六年级数学简便计算练习题答案=(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+ +

5、 +0.75+0.3755-=4+2+5+7 =+=+=+ (+) =+=5- (+)=4+5+(2+7) =10+=70-=+5=5=+ (+) =2 =5-4=1= 10+10=20=14=53x 4.25+60.625 x 0.5+x 62.5% x+ +(-1.8)+ +48.3-)=9*4+4* =*+*=+x =+(-1)(=1+9+99+999+9999= 48.3-+1*4=*9+=11107=48-20=28 =() () =1x = =-1+六年级数学简便计算练习题答案=10*= =15+=182.5 x(+)22 x+25x 75%-7x 0.750.25 x63.5 x

6、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) + 56x(-)49.5 x -(50-) x0.6x+45 x (+ - 0.6)897 x 37.5%+104x 0.375=110+ (1+999) / (56 x-56 x ) =49*-49 x = x+*+=45*(+-)=897 x-+104x= (11

7、0+1000) + (24-21 )=49(10-)=(+1)=45*+45*-45* = (897-1 + 104) x= 1110*=49*10=495=*11=7=35+12-27=20=896+104) x =1000x =375 (六年级数学简便计算练习题答案x(-5.375)3.5 x+1.25 x+3.8 +72 x 156-56x7225x32x 125709 x 99+709299 101=* (5-5) (156-56)=25*(8*4) *125 =709(99+1)=3*1+1*2+3*=72*=709*1004*125() =0=*=72*100=25*8*3+2+3

8、()*=7200=200*500=100000=70900=)(+2+* (=) +2+563x999 71 x 993755+29968439+1001446+295888+999210020六年级数学简便计算练习题答案2x6.6+2.5 x675.3 x 99+75.3 4.6 x 3.7+54 x 0.370.125 x+x 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*100=(4.6+5.4 ) *3.7=(

9、+1)=7-5=2=2*12=7530=10*3.7=*2=*=33=371161154.25519.826.573.434.6+3+6+5.4 4+2.25+5+79.63+2.5 +46+0.25 = 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=24六年级数学简便计算练习题答案3x+xx+18 x (+) x7+x5(-)x

10、( 24-)=3- (+)=(+)=*24-*=3-1=2=*12=2-=1=*+*=18*+18*=*+*=2*4+3*5(7+5)=+=8+15=23=2*4=8)x x7+x 5 x+(x)(+)x15x 11 12 x1034500+ 75 ( x +) + ( +=*165+*165*=*=/+1=() +() () (7+5= *=1=*+*65=2*4=8=*=2*11+3*15=+13=16=22+45=67六年级数学简便计算练习题答案(32x + 17)-(25 + ) + +x + x +(21x + x 21) x(99+) + 9=99*+*x +*=21(+8+17 () *=25*4+*4+ =(+1)=25*=100+3+=2*=1=21*=5=11+=11=1=5*12=60=103+ ( + ) x ( + ) x 30+3+x +4- - x 58+ x 41 + ) 58+41 + 1() (+=*)(=/*+*=*30+*30=+3*2 =1-=4-=25+24=49=6=4-1=2=*100=12) +=/ (=/=*=六年级数学简便计算练习题答案xxx + + (-) +235