Subtracting Mixed Numerals

Subtracting Mixed Numerals covers taking one mixed numeral from another in NSW Year 7 maths (NESA outcome MA4‑FRC‑C‑01). Rename the fractions with a common denominator, subtract the whole numbers and the fractions, and borrow one whole when the first fraction is too small, as in \(4\frac{1}{5} - 1\frac{3}{5} = 2\frac{3}{5}\).

You will subtract fractions from whole numbers, try the improper fraction method as a second way, check by adding back, and spot errors in someone else's working. Cutting ribbon off a roll, the time left in a film and the missing side of a garden bed are everyday examples. It is part of Year 7 Fractions.