### What is one tenth?

one tenth is 1 over ten. you know, the fraction, or when you cut a cake into ten pieces and you take one that means you took one tenth of the cake. 1/10 = 0.1 as a decimal In the metric system one tenth of a unit is denoted by the deci- prefix and written with a small g. For example a decigram (1 dg) is one tenth of a gram (0.1 g).