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2/9×0.625÷(10/3)简便运算

2/9×0.625÷(10/3) = 2/9×5/8×3/10 = 3/9×2/8×5/10 = 1/3×1/4×1/2 = 1/24

10-3.125×(2又2/3-1.6)÷(2又1/12-0.625) =10-25/8×16/15÷35/24 =10-10/3×24/35 =10-16/7 =54/7

-3×10×1又1/3×0.625×(-4/9)×(-8) =[(-3)×1又1/3]×[10×(-4/9)]×[]0.625×(-8)] =(-4)×(-40/9)×(-5) =-800/9

0.625÷7分之5+5分之4×8分之3 =8分之5×5分之7+10分之3 =8分之7+10分之3 =40分之35+40分之12 =40分之47 结果是40分之47

(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)=...

(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÷...

325-162÷36×24 =325-162×2/3 =325-54×2 =325-108 =217 ( 3分之1+6分之1+9分之1)除以36分之1 =(6/18+3/18+2/18)×36 =(11/18)×36 =11×2 =22 解方程 1、4分之3x+5分之2x=69 15x+8x=69×20 23x=69×20 x=60 2、1.25:0.25=x:1.6 0.25x=1.6×1.25 x...

(2.4-23/20)/0.625+4/5 =25/20 /0.625+4/5 =25/(20*0.625)+4/5 =25/12.5+4/5 =2+4/5 =2.8

3.72-0.375+2.28-0.625 =(3.72+2.28)-(0.375+0.625) =6-1 =5 101÷10/111-11又1/10 =101*111/10-111/10 =(101-1)*111/10 =100*111/10 =10*111 =1110 1/2004+2/2004+3/2004+……(省略号)+2003/2004 =(1+2+3+....+2003)/2004 =(1+2003)*2003/2/2004...

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