To find a value that is close enough to the right answer, usually with some careful thought involved.

Something may not be an exact measurement, but it is close to it.

Estimate length in cm

Maths

In this unit pupils will consolidate their counting to 20. They will measure objects using non-standard and standard measures and record outcomes. In the future unit pupils will explore the counting sequence for counting to 100 and beyond and represent the numbers from 20-99 in different ways, including marking the position on a number line.

In prior learning, pupils will have had opportunities to use manipulatives to organise counting including using everyday manipulatives, tens frames and through shape, space and measures. In this unit pupils will consolidate their counting to 20. They will measure objects using non-standard and standard measures and record outcomes.

Numbers 0 to 20 in different contexts

Which is the best estimate for the length of this playdough shape?

I estimate that this snake is about 7 cm long because 5 and 2 is equal to 7

I estimate that this snake is about 9 cm long because 5 and 4 is equal to 9

Which example has used '5 and a bit' correctly to estimate the length of this playdough snake?

I think that a good estimate for the length of this block is {{ }} cm. 

I think that a good estimate for the length of this leaf is {{}} cm.

What is the length of this pencil? {{ }} cm.

What is the height of this plant? {{ }} cm.

What number is missing from this number line?

Estimate which number the arrow is pointing to.

Jun has made 13 using 10 and a bit. What is the missing number in this picture?

This lesson will be removed by end of Summer Term 2025.

Estimate length in cm

Lesson outcome

This lesson will be removed by end of Summer Term 2025.