# Lilly let her friend borrow 1/10 of the money in her purse to buy a snack. How do you write the fraction as a decimal?

$0.1$
You may simply input $1 \setminus \div 10$ on a calculator to get the answer, but in this case it is easy to make the computation: dividing by $10$ means to shift the decimal separator one step left, possibly adding zeroes when needed.
So, adding apparently useless zeroes, if you think of $1$ as $01.0$ and move the decimal separator one step left you get $0.10$ which is $0.1$