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六年级简便计算及答案

4/5+2/3+1/5+1/3 =(4/5+1/5)+(2/3+1/3) =1+1 =2 4/5x2/3+4/5x1/3 =4/5x(2/3+1/3) =4/5x1 =4/5 20x(1/5+1/4) =20x1/5+20x1/4 =4+5 =9 19x1/18 =(18+1)x1/18 =18x1/18+1x1/18 =1+1/18 =19/18

①5.76*6+2..24*6-3*2②(2/1+3/1-5/1)*5+3.5*2-0.2*5③5.2*6÷6/1+1.8④3.3*2.2+3.7*2.2*10⑤9.7+6.5-1.2+6÷3⑥3.5*10-3.6*5-6*2.5⑦3.69+6.16-0.12⑧63.7+5.2-24.6*1.5⑨8.2-6.6+4.5*10-15.33.5+

1+1=2 2+=4 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

300÷125÷8=300÷(125*8)=300÷1000=0.3 396-96-172-28 =(396-96)-(172+28)= 300-200 = 100 125*24 = 125*8*3 = 1000*3 = 3000 26*15 = (20+6)*15 = 20*15 + 6*15 = 300+90 =390 25*99*4 = 25*4*99 = 100*99 = 9900 250*32 = 250*4*8 = 1000*8 = 8000 (98+98+98+98)*25 = 4*98*25 = 4*25*98 = 100*98 = 9800

0.4*125*25*0.8 =(0.4*25)*(125*0.8)=10*100=1000 1.25*(8+10) =1.25*8+1.25*10=10+12.5=22.5 9123-(123+8.8) =9123-123-8.8=9000-8.8=8991.2 1.24*8.3+8.3*1.76 =8.3*(1.24+1.76)=8.3*3=24.9 9999*1001 =9999*(1000+1)=9999*1000+

(1)2x+8=16 (2)x/5=10 (3)x+7x=8 (4)9x-3x=6 (5)6x-8=4 (6)5x+x=9 (7)x-8=6x (8)4/5x=20 (9)2x-6=12 (10)7x+7=14 (11)6x-6=0 (12)5x+6=11 (13)2x-8=10 (14)1/2x-8=4 (15)x-5/6=7 (16)3x+7=28 (17)3x-7=26 (18)9x-x=16 (19)24x+x=50 (20)6/7x-8=4 (30)3x

1、56+31+242、615+475+1253、125*644、 89+101+1115、24+127+476+5736、400-273-1277、327+(96-127)8、70*989、442-103-14210、999+99+911、67*5*212、25*(78*4)13、72*12514、9000÷125÷815、400÷2516、25*3617、

1.3/7 * 49/9 - 4/3 2.8/9 * 15/36 + 1/27 3.12* 5/6 2/9 *3 4.8* 5/4 + 1/4 5.6÷ 3/8 3/8 ÷6 6.4/7 * 5/9 + 3/7 * 5/9 7.5/2 -( 3/2 + 4/5 ) 8.7/8 + ( 1/8 + 1/9 ) 9.9 * 5/6 + 5/6 10.3/4 * 8/9 - 1/3 11.7 * 5/49 + 3/14 12.6 *( 1/2 + 2/3 ) 13.8 * 4/5 + 8 * 11/5 14.31 *

1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 * 49/9 - 4/3 5. 8/9 * 15/36 + 1/27 6. 12* 5/6 2/9 *3 7. 8* 5/4 + 1/4 8. 6÷ 3/8 3/8 ÷6 9. 4/7 * 5/9 + 3/7 * 5/9 10. 5/2 -( 3/2 + 4/5 ) 11. 7/8 + ( 1/8 + 1/9 ) 12. 9 * 5/6 + 5/6

6.9+4.8+3.1 0.456+6.22+3.78 15.89+(6.75-5.89)4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.23.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.475.27+2.86-0.66+1.63 13.35-4.68+2.65 73.8-1.64-

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