Use this Year 6 Subtract from a Mixed Number (Crossing the Whole) Varied Fluency resource to help your children learn how to subtract proper fractions from mixed numbers.
This resource begins with using fractions that have the same denominator, and progresses to using fractions with different denominators, allowing children to become familiar with the process of converting to improper fractions to help them learn.
An answer sheet is also provided to make your marking easier. You could even let your children mark their own work.