1/1*4+1/4*8+1/8*12+...+1/96*100=?
(1/2*4*6)+(1/4*6*8)+……+(1/96*98*100)=?
1/2*4*6+1/4*6*8+1/6*8*10+.+96*98*100
(-1/4+1/6-1/8+1/12)*(-24)
4/1:12/1=8:x 解方程
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/
计算: 1/2×4+1/4×6+1/6×8+1/8×10+1/10×12
1+2+3-4+5+6+7-8+9+10+11-12+...+95-96+97+98+99-100
1+2+3-4+5+6+7-8+9+10+11-12+...95-96+97+98+99-100[能简算要简算
100十4十7十8十1十1十1十8=?
【数学】算一算,找规律.1/2+1/4+1/8= 1/2+1/4+1/8+1/16= 1/2+1/4+1/8+1/16+
8/15-1/4=