0.01+0.001+0.0001..+0.0000000001有公式么?

0.1/0.01*0.001/0.0001 如何简便 0.01+0.001+0.0001..+0.0000000001有公式么? 0.1+0.01+0.001+0.0001+.=2009/() 1-0.1-0.01-0.001-0.0001.-0.0000000001 1-0.1-0.01-0.001-0.0001-……-0.000000001怎么算 0.1、0.01、0.001、0.0001、0.00001.会越来越接近（） 1减0.1减0.01减0.001减0.0001 11-0.1-0.01-0.001-0.0001……-0.00000000 ＝ 人民币0.01是分0.001是什么?0.0001是什么? 0.1+0.01+0.001+0.0001+0.00001的循环小数等于多少 -40,-20,-10,1,0.1,0.01,0.01,0.001,0.0001,0.00001有什么规律 1-0.1-0.01-0.001-0.0001用简便运算怎么算急用 1/0.1/0.01/0.001/0.0001/0.00001/0.000001/0.0000001/0.00000001/0.000000001/0.0000000001 1减0.1减0.01减0.001减0.0001减0.00001～0.0000000001怎么巧算? 1÷0.1÷0.01÷0.001÷0.0001÷0.00001÷0.000001=多少 0.1分之1-0.01分之1-0.001分之1-0.0001分之1 1/0.1-1/0.01-1/0.001-1/0.0001.=?怎么算? 小数的计数单位有0.1 0.01 0.001 0.0001……