Question

11．把3.5%化成分數(shù)是$\frac{7}{200}$，化成小數(shù)是0.035．

Answer 1

分析 百分數(shù)化分數(shù)的方法：先寫成分數(shù)的形式，再根據(jù)分數(shù)的基本性質(zhì)化簡成最簡分數(shù)；百分數(shù)化小數(shù)的方法：去掉百分號，把小數(shù)點向左移動兩位；據(jù)此解答即可．

解答 解：3.5%=$\frac{35}{1000}$=$\frac{7}{200}$，
3.5%=0.035
把3.5%化成分數(shù)是 $\frac{7}{200}$，化成小數(shù)是 0.035．
故答案為：$\frac{7}{200}$、0.035．

點評 此題考查百分數(shù)與分數(shù)和小數(shù)的互化，掌握方法，正確轉(zhuǎn)化即可．