Year 3 estimating answers worksheets (addition and subtraction within 1,000)
These Year 3 estimating answers worksheets help pupils estimate the answers to addition and subtraction calculations within 1,000 before solving. They support pupils to round numbers sensibly and use estimation to check whether an answer is reasonable.
The questions include a mix of 2-digit and 3-digit additions and subtractions. Pupils practise rounding to a helpful multiple (such as the nearest 10 or 100) and using that estimate to make quick judgements, reduce mistakes, and build confidence with choosing efficient strategies.
This resource works well as an independent task, guided group work, or a short assessment after teaching estimation in Autumn Block 2. It also pairs nicely with inverse checking to help pupils spot errors and explain their thinking.
