Free grade 5 fraction of numbers worksheets to help your students in mathematics. Understanding how to find fractions of numbers is an important skill in grade 5. If you’re good at division, multiplication and times tables, it’s very easy. You simple divide the whole number by the denominator and multiply that answer by the numerator. It takes a bit of practice, but after a while your students will become masters of fractions of numbers. Also, teach your students that in maths, ‘of’ means x (multiply), so they’re actually multiplying a fraction by a whole number, hence why the answer is less than the whole number – because you’re multiplying a number by something less than one. It can be tricky to explain, but with some repetition, the math gets easier.