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Maths Quiz - Year 2 Measurements - Estimating (Questions)

Estimating length is a handy first step. Make a sensible guess using number lines, then measure to check and improve accuracy.

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(quiz starts below)

Fascinating Fact:

Length line. Point on a number line. If 18 cm sits between 10 and 20, say “about 20 cm”. Then measure.

In KS1 Maths, pupils estimate measurements before checking them. Using benchmarks and number lines helps children make sensible guesses, then a ruler or tape measure confirms the exact length.

Key Terms

  • Estimate: A sensible guess based on what you already know.
  • Number line: A straight line marked with numbers to help compare sizes.
  • Reasonableness check: A quick test to see if your answer makes sense.

Frequently Asked Questions (Click to see answers)

How do you estimate length in KS1?

Start by thinking of a known size, like a 10 cm ruler. Place the object on a number line in your mind, make a sensible guess, then measure to check.

What is a number line used for in measuring?

A number line helps you see where a length might fit between two markers, such as between 10 cm and 20 cm, so you can estimate quickly.

How do I check if my estimate is reasonable?

Compare with a benchmark, then measure accurately. If your estimate is close to the measured value, it was reasonable; if not, adjust next time.

Try These Related Quizzes

To see a larger image, click on the picture.
1. How tall might this man be?
[ ] 1m 80cm
[ ] 18cm
[ ] 1km 8m
[ ] 12m
2. How long could your hand be?
[ ] 12cm
[ ] 12mm
[ ] 12m
[ ] 12km
3. How much liquid could a coffee cup hold?
[ ] 250g
[ ] 250cm
[ ] 250ml
[ ] 250kg
4. What could the temperature be in this fridge?
[ ] 2mm
[ ] 2oC
[ ] 2kg
[ ] 2m
5. How much might this puppy weigh?
[ ] 5oC
[ ] 5g
[ ] 5km
[ ] 5kg
6. What unit of measure would be best to measure the ribbon around the parcel?
[ ] Metres
[ ] Centimetres
[ ] Millimetres
[ ] Miles
7. What could be the temperature in this photograph?
[ ] 80mm
[ ] 80ml
[ ] 80km
[ ] 80oC
8. What could this item be used to measure?
[ ] A large bunch of bananas
[ ] The water in a bath
[ ] The distance to the moon
[ ] The height of a cat
9. What unit of measurement would be most appropriate to measure the length of this pitch?
[ ] Degrees
[ ] Kilograms
[ ] Millilitres
[ ] Metres
10. How much lemonade might this jug hold?
[ ] 2 metres
[ ] 2 litres
[ ] 2 millimetres
[ ] 2 kilograms
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Maths Quiz - Year 2 Measurements - Estimating (Answers)
1. How tall might this man be?
[x] 1m 80cm
[ ] 18cm
[ ] 1km 8m
[ ] 12m
Most adults are taller than 1 metre but less than 2 metres
2. How long could your hand be?
[x] 12cm
[ ] 12mm
[ ] 12m
[ ] 12km
Smaller items are usually measured in centimetres
3. How much liquid could a coffee cup hold?
[ ] 250g
[ ] 250cm
[x] 250ml
[ ] 250kg
Millilitres are used to measure smaller amounts of liquid
4. What could the temperature be in this fridge?
[ ] 2mm
[x] 2oC
[ ] 2kg
[ ] 2m
Temperatures are measured in degrees
5. How much might this puppy weigh?
[ ] 5oC
[ ] 5g
[ ] 5km
[x] 5kg
Kilograms would be the best unit to use here
6. What unit of measure would be best to measure the ribbon around the parcel?
[ ] Metres
[x] Centimetres
[ ] Millimetres
[ ] Miles
Centimetres would be easier to use for shorter measurements
7. What could be the temperature in this photograph?
[ ] 80mm
[ ] 80ml
[ ] 80km
[x] 80oC
Degrees measure temperatures. 80oC is very hot!
8. What could this item be used to measure?
[x] A large bunch of bananas
[ ] The water in a bath
[ ] The distance to the moon
[ ] The height of a cat
These are kitchen scales and are usually used to weigh items of food
9. What unit of measurement would be most appropriate to measure the length of this pitch?
[ ] Degrees
[ ] Kilograms
[ ] Millilitres
[x] Metres
Metres would be easier than centimetres!
10. How much lemonade might this jug hold?
[ ] 2 metres
[x] 2 litres
[ ] 2 millimetres
[ ] 2 kilograms
Litres are used for liquid
© Education Quizzes. Please visit www.educationquizzes.com to subscribe