六年级数学简便计算练习题答案

1、六年级数学总复习简便计算练习题、口算。（10分）10 2.65 =7.350+3.8 = 09 X 0.08 = 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=280 X 0.125=80* 1 =10- -3X 1=*1 X 1 =877 7 37 49二、用简便方法计算下面各题。(90分，4X20+5X2)1125-997998+124641+3.2 + 52 +6.812- - (1 - +2-)400+125 + 825 X (37X8)33575=1125- (1000-3)=

2、 (998+2) + (1246-2) = (41 +5- ) + (3.2+6.8 ) =12-2- -1-=400+ ( 125*8) =25*8*3733557=1125-1000+3=1000+1244=10+10=20=10-1- =8-=400+1000=2 =200*37=7400775=125+3=128=2244(1_ 1)X12146=(-)*12=24242= *12=243 X2 X -41577X2义 44157(7X -) *2 4 715=1=1*2=234 X(2 +力)125 X8.84.3513=34 X2 + 34X 13 =125*(8+0.8)=34=

3、68+13=125*8+125*0.8 =8+8=16=81=1000+100=1100+ 4.25 +3.65 +3.753.4 X 99+ 3.4(4.35+3.65 ) + (4.25+3.75 ) =3.4* (99+1)=3.4*100=3405151517.15 8.47 1.53175-3- -4646=17.15- (8.47+1.53 )=175-45 - 366431=17.15-10=13-3-=9-44=7.15=+ 95119&X295117*至十2X0.125=1X 0.25 X 3222.3=22.3-5.3-=17-7=10 2.45 -5.3-4.55

4、(2.45+4.55 )9 11(7 +91111 11(11+ + ) X 724.251218 24= 11x 72+ X 72+X 72 =4121824187.7 X 11-187.71+13- (35+21) 4466=187.7*(11-1 )43=43711c-X- +57.125 X 0.5=11*6+7*4+5*3=6-6=0=1887-(43- +57- -1 )2884、/力33不x (7141 )c4534、315 x(7 -u *：=66+28+15=1091 -*100=5028*(5 _2)15 7749* 3 = 715 7 52.42 + 3+4.58 X 1

5、1 4+343=2.42* 4 +4.58 X - - 4*1=233 3=4 (2.42+4.58-1 )=34=4*6=831371222 X6.6+2.5X651T8 -6- -131*63+21*63=252521 *2*6 3=25=10+10=20234.6+35 +65 +5.4452.8+5- +7.2+3"4：55+ 12 )117 (6+1； )=4-+32 +6-+5-=(2.8+7.2 )+5-+3-= 44 4-483355559955 12117 -8=3-=4-+5-+ (3-+63) =10+9=19=2-5 =1 8855551212+47 +252

6、7 +% 37 +184+170.75+2 +T +0.3758 4/3153=4+2 +5+7- =72 +23 +45=53：65 +16-4 16：848455711117=43+55 +(21+73)= 10+45=70416：884477=10+10=20=145=5337743 +2.25+55 +738846455311 167 +16万343/54=27 +17 一% +(39 +19= -+5=54=+ + -+- + (-+3) =24 48 85-2 -55 217 1175-(卓 +13)=5-4=14+94+994+9994+9999448.3-151 -455555

7、5669日 X 4.25+41 +60.625 X 0.5+g + X 62.5%648 2164 +(24-1.8)=(1+9+99+999+9999 )4=11107 55 一 1,11=9 *4+4，* '644 6/ 51、一 1=(9- +-)*4-66417 _,85=10* = 142=48.3- (151 +45 ) 、66=48 - -20=28 - 10105*15* 1* 5+ * * _828 285 +1 1-*(+D82 2313 * 7213 . 31344=165 +百4-15)4 =1654-15153+2,18共5735-9.9 .9 -92.5X

8、(10 +10 +10 +10 )=2 1 *4* =22*210= 5*4* =10* =9 =21010322*4 +25* 75%-7*0.75110.25X 63.5- X 1327 J _7817%X2.5-22X41539 +3.125+1 9+181125-9963 +25* - -7*441*631- 1*13-=6 _3 71(22+25+7) *3 = 7142-* (63-131)=1*50=12142=2*2 - -2 - *4 =38 +1-1 + (3- +1 ) =1125- (1000-4)1522159988(6-4 ) *2- =5+5=10=1125-10

9、00+415152-=5=125+4=1292(111+999)+ 56 X (7 -3 )c“3 _ 1 V49*105 -(50-2)><0.671114X 4一419+5 -519331313=110+ (1+999) / (56*7 -56*8 ) =49-*105 -49, X -=(110+1000) + ( 24-21)=49- (103-3 )25 5=1110*1=491 *10=495327117117_1114 X 4419*工117+一11, 145(9 +5W +1)*11=71334 * (58 5.375)= 13* (53-5 3)48872 X 1

10、56-56X 72=0=3 1*1 1+1-*2 4 +34*52441054=(31+2 +3-)*521054=+23)*521054=（至+2工+竺）*51010 1043.5X 11 +1.25X2：7 +3.8 + 441053755+2996=72* (156-56)=72*100=7200563X99971X998439+100174cc3cC, “45*(9 +而0.6)897X- 37.5%+104 X 0.3757 4 3、333=45* ( +-)=897 X +104 X 9 15 5888=45* 7 +45* -45* -:,3=(897-1 + 104) X 91

11、558=35+12-27=20=(896+104) x3=1000x - =375 8825X32X125709X99+709299X101=25* (8*4) *125=25*8* (4*125)=200*500=100000446+295888+999=709 (99+1)=709*100=709002100+ 201 3 2NJIX 6.6+2.5X 601175.3X 99+75.34.6X37+54X0OO713 13H2I-*6IO+2I-*6IOH75 3* (99+) K6*3.7+5.4*3.7 H2 5 2 5H2S (610+62) ”75.3*100 H (4.6+54

12、 ) *3.7 H2 5 5H21*1210H7530 a 0*3 7 H2 55 * 66 oo 2HI*IH33 H372 53 1P125J+OIX 8.25+12.5%q a1*3 1 *。1 1 * +1 *8 + 8 4 8 4 8 1 (心+1)8 4 41 1I-*2HI-8 48.373.25(1.37+1.75)H8.371.37H75H211°l60l1 加 1%4.2559 1982-6.573.43 4.6+3l+6*5.4 4*2.25+%aCACA74 4 a aH11Z (61+12) H152 (41+5 心)19002 (6.57+3.43 ) H

13、4.6+5.4+ (32+6 心)H4 心+5lul+(2+7 心 833 14 44 558844 7 7 3 3H11! 8 H3 I H15 110H5H19OO210H9OO2 H10+10H20 H10+10H20 H9.63H0H0.963 88 14 14(3.25+1.75 )9.63+2.5+4H9.63/ (2.5*4 ) H6*4H246+P25 2 1 6/ 4(5X4 +77=(5+1)7=1 54) 7 *4*51/ 51* 53 5(-+) 39 6539 + 1*6525=2*4=82 X7+2 X513102 +怎 XT )3、 “ 一+ 不)x 15X 11

14、12X 1034500+75(7+5)1一 *81*8 4 3215*165+- *16511=2*11+3*15=22+45=67= 39+13=16-1010(32 X * 17)一9(25+ 3)+ 1 +118 %入X -+坦(21 X - +-X21)X -(99+ )-94X5412444251625161677410568,、1231 _/ 187+ D9=21/ 3 4、+ 1=99*19.14 .5+ 8=(8+17) * =25*4+-*4+(+ (-+-)*-+ *-=*-54425251167 749 10 956512 =25* =100+3+1=2*_9 =：9=1

15、=21*115=11 +-1=111=16=1154168844101015151=5*12=60=10314- ( 4+ 2) 1 (5 + 4)X3015531165=/ ( 4*10+2 *10)=5 *30+ - *30155 11 3 1165=/ (+ 20)=25+24=49=61511 33_14/ 44 _ 14* 3 =215 33 15 4 101 + 3+ -56X9326510-+3*2 =1-321=13295=4-=4-15411(-1111 111=2四1111-也+ - X41+ -8881,、=* (58+41+1)811=-*100=12-827104 4 v514 5,2.34/51、,53-X- *胃(,一235 - 135+ 18工 X 153 - 0.6X 535 7425 655582854 12/ 2