How do you write five hundredth's as a decimal?

Fraction ; 5/100

Decimal ; 0.05

NB In the fraction there are '2'(two) zeroes, so the decimal is written to '2'(two) decimal places.

NB

Similarly

5/1000 (Five thousandths) becomes 0.005 ( '3' Three zeroes to '3' decimal places ). et. seq.,