MathematicsMultiplication & DivisionAges 10–11
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
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Check 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
“Before your child 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?”
Curriculum record
- Type
- Meta
- Subject
- Mathematics
- Domain
- Multiplication & Division
- Age range
- Ages 10–11