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Year 3

Estimate in metres and describe a metre in different ways

I can estimate lengths and heights in metres and describe a metre in different ways.

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Share activities with pupils
New
New
Year 3

Estimate in metres and describe a metre in different ways

I can estimate lengths and heights in metres and describe a metre in different ways.

Download all resources
Share activities with pupils

Lesson details

Key learning points

  1. The length or height of an object can be estimated using the standardised unit of metres.
  2. One hundred, 1 cm lengths are the same as 1 m.
  3. Ten, 10 cm lengths are the same as 100 cm, which is the same as 1 m.

Common misconception

100 cm is bigger than 1 m.

1 m is equal in length or height to 100 cm. 100 cm make up 1 m. They are the same length or height.

Keywords

  • Estimate - An estimate is a given value, number or quantity that is near to the true amount.

  • Metre - A metre is a standardised unit of measurement. We can abbreviate metre to m.

  • Centimetre - A centimetre is a standardised unit of measurement. We can abbreviate centimetre to cm.

Children need a concrete example of a metre and how long and tall 1 m is. Where possible, the suggested activities should be carried out practically.
Teacher tip

Licence

This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).

Video

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Starter quiz

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6 Questions

Q1.
Look at the picture. Which is taller, the elephant or the giraffe?
An image in a quiz
elephant
Correct answer: giraffe
Q2.
Look at the picture. Which is longer, the blue ribbon or the yellow ribbon?
An image in a quiz
Correct answer: blue ribbon
yellow ribbon
Q3.
Match the calculations to their answer.
Correct Answer:2 x 10 =,20

20

Correct Answer:5 x 10 =,50

50

Correct Answer:9 x 10 =,90

90

Correct Answer:4 x 10 =,40

40

Correct Answer:7 x 10,70

70

Q4.
How many tens are there in 60?
Correct Answer: 6, six, Six
Q5.
How many tens are there in 100?
Correct Answer: 10, ten, Ten
Q6.
Look at the picture. Which car has travelled the furthest?
An image in a quiz
The blue car.
Correct answer: The red car.
The green car.

Exit quiz

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6 Questions

Q1.
A given value, number or quantity that is near to the true amount is known as
a metre
a centimetre
Correct answer: an estimate
Q2.
Which of these would you use metres to measure the height or length of?
Length of a pen.
Correct answer: Height of a tree.
Height of a toy car.
Length of a banana.
Q3.
How many centimetres are there in one metre?
1
10
Correct answer: 100
Q4.
I have a piece of ribbon that is 70 cm long. Is this ribbon shorter or longer than one metre?
Longer
Correct answer: Shorter
Q5.
How many 10 cm lengths will we get if we cut a 60 cm piece of ribbon up into 10 cm lengths?
Correct Answer: 6, six, Six
Q6.
A whole length of string has been cut into 3 equal pieces and each of those pieces is 10 cm. What length is the whole piece of string?
Correct Answer: 30 cm, 30, Thirty cm, thirty cm, 30 centimetres