Support your class in developing confidence with large numbers, negative values and number sense using this Year 6 estimation worksheet. Pupils are shown a series of number lines, each with an arrow pointing to a specific but unlabelled point. Children must estimate the number that the arrow indicates, considering the scale and intervals of each line. The worksheet increases in difficulty, with number lines covering intervals from 0–1000, 0–10,000 and even those extending into negative values. This activity helps strengthen estimation strategies and encourages reasoning about number positioning and place value.
Key Curriculum Focus
This KS2 number and place value worksheet aligns with the national curriculum by supporting:
- Estimating numbers using a range of number lines and scales, including negative numbers
- Understanding place value and the relative size of numbers up to 10,000
- Using reasoning to position numbers within intervals based on visual estimation
The Year 6 estimation worksheet gradually increases the challenge, offering exposure to a variety of number line scales. By practising this visual form of estimation, children improve their ability to approximate quantities, assess intervals and justify their answers logically. This helps build number confidence and prepares them for upper KS2 reasoning questions.
Estimation in Year 6 Maths
Estimation is the skill of finding a value close to the actual number, often using rounding or visual judgement. For example, if an arrow is halfway between 2000 and 3000, a good estimate would be 2500. In Year 6, children estimate on larger scales, work with decimals and negative numbers, and explain how they reached their answer. This strengthens both number sense and their understanding of intervals, which is essential in many areas of KS2 maths.
Activity Idea: Estimate and Justify
Draw a large number line on the board and place arrows at different points. Ask children to estimate the value and give a reason for their choice—e.g. “It’s three-quarters of the way between 100 and 200, so I think it’s about 175.” Encourage varied reasoning using fractions, benchmarks or comparisons.
Discover more Year 6 maths resources
For additional number sense practice, your class might enjoy our Year 6 Mixed Number Patterns Worksheets, which encourage rule-based thinking and number pattern recognition. Browse our Year 6 maths worksheets to find more KS2 resources focused on place value, estimation and reasoning strategies.
