【2/5-1/2+1/6】*30
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【2/5-1/2+1/6】*30【2/5-1/2+1/6】*30【2/5-1/2+1/6】*30【2/5-1/2+1/6】*30=【-1/10+1/6】*30=2/30*30=2
【2/5-1/2+1/6】*30
【2/5-1/2+1/6】*30
【2/5-1/2+1/6】*30
【2/5-1/2+1/6】*30
=【-1/10+1/6】*30
=2/30*30
=2
【2/5-1/2+1/6】*30
(2/5+1/6-2/15)*30简便计算(2/5+1/6-2/15)×30
行测题 1/2,3/2,5/6,11/30,
1/2+1/6+1/12+1/20+1/30;1/2×3+1/3×4+1/4×5+1/5×6+1/6x7
-(-1-1/3+3/5-5/6+1/2)/(1/30)的简便计算怎么写?
11/30+9/20+7/12-5/6+1/2
1+2+3+4+5+6+7+8+9.+30
30x(5分之2+6分之1)
下面是某同学计算(- 1 30 )÷( 2 3 - 1 10 + 1 6 - 2 5 (- 1 30 )÷( 2 3 - 1 10 + 1 6 - 2 5 ) =(- 1 30 )÷ 2 3 +(- 1 30 )÷(- 1 10 )+(- 1 30 )÷ 1 6 +(- 1 30 )÷(- 2 5 ) =(- 1 30 )× 3 2 + 1 30 ×14- 1 30 ×6+ 1 30 × 5细心的你能否看出上
计算(2/3-1/10+1/6-2/5)÷(-1/30) 要过程
(-1/30)除以(2/3-1/10+1/6-2/5).巧算
(-1/30)除以(-1/10-2/5+1/6-2/3)
(-1/30)÷(2/3-1/10+1/6-2/5)计算怎样算?
(-1/30)/(2/3-1/10+1/6-2/5)=
计算:(-1/30)/(2/3-1/10+1/6-2/5)
2/1*2*3+2/2*3*4+2/3*4*5+2/4*5*6+.2/28*29*30
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)
1/1*2+1/2*3+1/3*4+1/4*5+1/5*6+1/6*7+```+1/29*30