3,8
1/5+1/10+1/20+1/40••••••=?
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相关问题
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1/2+1/5+1/10+1/20+1/40+1/80=
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1/5+1/10+1/20+1/40=?用巧算
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找规律5,1,10,4,20,(),40,10,()...
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1=5,2=10,3=20,4=40,5=?
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直接写得数. 20×5%= 1÷1%= 1-70%= 2÷2%= 1 2 -0.25= 1 5 +10%= 40×20%
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1/1*5+1/5*10+1/10*15+1/15*20+1/20*25 要怎么算
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(40-x)(x-20-1)-12.5-10等于多少?
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1-9/18=[ ]25/40-20/28=[ ]1-44/36=[ ]8-[1/6+1/5+4/15+7/10]=[
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5/2,5/1,10/1,20/1,( ),( ),160/1
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1::5,,,20,15,30,20,40,