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20道简便计算六年级

1(1)189+98 (2)475-94 (3)654+997 (4)1672-996 (5)178+296 (6)963-499 (7)198+97 (8)601+198 (9)503-97 答案(1)287 (2)381 (3)1651 (4)676 (5)474 (6)464 (7)295 (8)799 (9)4062(1)19+199+1999 (2)2600-99-98-97 (3)824+98 答案(1)2217(2)2306(3)922

1. 6÷ 3/8 3/8 ÷6 =1/6x(3/8-3/8)=1/6x0=02. 4/7 * 5/9 + 3/7 * 5/9 =(4/7+3/7)x5/9=1x5/9=5/93. 5/2 -( 3/2 + 4/5 )=5/2-3/2-4/5=1-4/5=1/54. 6 *( 1/2 + 2/3 )=6x1/2+6x2/3=3+4=75. 8 * 4/5 + 8 * 11/5=8x(4/5+11/5)=8x3=24 6. 31 * 5/6 5/6 =(31-1)x5/6=30x5/

1.3/7 * 49/9 - 4/32.8/9 * 15/36 + 1/273.12* 5/6 2/9 *34.8* 5/4 + 1/45.6÷ 3/8 3/8 ÷66.4/7 * 5/9 + 3/7 * 5/97.5/2 -( 3/2 + 4/5 )8.7/8 + ( 1/8 + 1/9 )9.9 * 5/6 + 5/610.3/4 * 8/9 - 1/311.7 * 5/49 + 3/1412.6 *( 1/2 + 2/3 )13.8 * 4/5 + 8 * 11/514.31 * 5/6 5/

展开全部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 +

(1)2.64*1.7-2.64*0.7=2.64*(1.7-0.7)=2.64*1=2.64 (2)31.5*1.07-3.15*0.7=3.15*10.7-3.15*0.7=3.15*(10.7-0.7)=3.15*10=31.5 (3)2.7*5.7-2.7+5.3*2.7=2.7*(5.7-1+5.3)=2.7*10=27 (4)0.625÷0.125*0.8=(0.625*0.8)*8÷(0.128*8)=0.5*8÷1=4 (5)18.6*6

300除以125除以8300除以(125*8)300除以 1000.3

1. (25%-695%-12%)*36 2. 3/4*3/5+3/4*2/5 3. (1-1/4+8/9)/7/9 4 2/3+1/6/3/24+2/21 5 1*8/15*3/5 6 10-3/4/9&#

1125-997 998+1246 431+3.2+532+6.8 1252-(172+252) 400÷125÷8 25*(37*8) =1125-(1000-3) =(998+2)+(1246-2) =(431+532)+(3.2+6.8)=1252-252-172 =400÷(125*8)=25*8*37 =1125-1000+3 =1000+1244 =10+10=20 =10-172=875 =400÷1000=

2+1/[1-(3/4)] (3/4)*(2/5)/(3/4)*(2/5) 4/(1/5)-(1/5)/4 (16/5)/(5/9)*(5/16) [(3/4)-(1/2)-(1/6)]*12 3/(3/4)-(3/4)/3 [(5/6)-(2/3)]/[2-(1/2)] 2又(1/3)+1又(4/21)+5又(2/3) 9又(1/6)+3又(3/20)+6又(5/6) 3又(5/9)+6又(7/13)+4又(6/13) 2

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