Using inverse operations
Mathematics · Multiplication & Division · conceptual
Recognise and use relationships between operations including inverse operations; use these relationships to check answers and simplify calculations
What mastery looks like
- Use addition and subtraction as inverse operations to check and solve problems
- Use multiplication and division as inverse operations to check and solve problems
- Recognise that squaring and square-rooting are inverse operations
Check your understanding
If Using inverse operations works out '252 ÷ 7 = 36', can they immediately use the inverse to check — '36 × 7 = 252' — without having to redo the division?
Prerequisites
Required first