(1)1/6:30% (2)2/3:3/8 (3)0.48:0.06 (4)0.25:1/6
(1)1/6:30% (2)2/3:3/8 (3)0.48:0.06 (4)0.25:1/6
7/2+9/4+(-1/3)-0.25+(-1/6)
计算-8+[-1/7-(-1/6-0.25×2/3)÷7/3]-(8+9)
计算:(-2/3)+(0.25)+(-1/6)-(+1/2)=?(3又3/5)+(+4又3/4)-(+1又2/5)+(-
(1)5.57-[(-3/8)+(0.5)-(-5/6)+4又2/3]-1/8 (2)0.25+2
1/2-(3/4-3/8), 1/2+1/4-1/6 , 2/3+(1/2+1/4),
1/2-(3/4-3/8),1/2+1/4-1/6 ,2/3+(1/2+1/4),
2(3^2+1)(3^4+1)(3^6+1)(3^8+1)要简算
初中计算(-2)^4/(-2 2/3)^2+(5 1/2)*(-1/6)-0.25
简算,(3/1-0.25)/2/1+6/5
1/(1*3)+1/(2*4)+1/(3*5)+1/(4*6)+...+1/(8*10)=?
(1/2+1/3+1/4+...+1/30)+(2/3+2/4+...+2/30)+(3/4+3/5+3/6+...+3