1/3*2/5+1/6*1/5+1/12*3/10
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1/3*2/5+1/6*1/5+1/12*3/10
1/3*2/5+1/6*1/5+1/12*3/10
1/3*2/5+1/6*1/5+1/12*3/10
=2/15+1/30+1/40
=16/120+4/120+3/120
=23/120
计算(+5/2)-(-5/3)=-5/1(-5/2)-(-5/3)=5/12/1-3/1=6/1(-2/1)-3/1=-6/1
5/12-1/6+2/3=?
1/2,1/3,5/6,( ),12/6,( )
找规律填空:1/12,1/6,1/4,1/3,5/12,1/2,().
按规律写数:1/12,1/6,1/4,1/3,5/12,1/2,( )
2/1 3/1 4/1 5/1 6/1 8/1 10/1 12/1 15/1 20/1
递等式计算 1/2-1/3+1/4-1/5+1/6-1/12
1/2-1/3+1/4-1/5+1/6-1/12
简便计算下题.1/2-1/3+1/4-1/5+1/6-1/12
1/2+1/6+1/12+1/20+1/30;1/2×3+1/3×4+1/4×5+1/5×6+1/6x7
1/3*2/5+1/6*1/5+1/12*3/10
1/12÷(5/6-1/3+2)
1/2+3/4-1/6+5/12=?
1/12÷(5/6-1/3+2)怎么解?
1+(-2)+|-2-3|-5 (1/4-1/16-1/6+1/12)x(-48) 这两题
1/2 + 1/6 + 1/12 + 1/20 + 1/30+ 1/42 + 1/56 + 1/72=(1+ 1/2+ 1/3+ 1/4+ 1/5)×(1/2+ 1/3+ 1/4+ 1/5+ 1/6)-(1+ 1/2+ 1/3+ 1/4+1/5+ 1/6)×(1/2+ 1/3+ 1/4+ 1/5)
(1/2-3-5/9+5/6-7/12)*(-36)
[1又2/3-(1/3-1/6+5/12)×2.4]÷5脱式计算