Mathematics·Multiplication & Division·meta
Estimation to check answers to calculations
Use estimation to check answers to calculations and determine, in the context of a problem, an appropriate degree of accuracy
Suggested ages 10–11
Learning journey
Your child is advancing to sophisticated multiplication and division — using formal written methods for complex calculations, working with decimals, and applying the order of operations to solve multi-step problems.
Evidence of understanding
- Estimate 487 × 23 by rounding to 500 × 20 and use this to check a calculated answer
- Determine whether an exact answer or an estimate is more appropriate in a given context
- Spot an unreasonable answer by comparing with a quick mental estimate
Assessment prompt
Before Estimation to check answers to calculations works out a large multiplication or division, can they estimate what the answer should be roughly — and then check whether their final answer is in the right ballpark?
Standards alignment
No external standards are linked to this topic.