# Using bar models to represent measurement problems

## Lesson details

### Key learning points

1. In this lesson, we will use our knowledge of bar models to interpret if a word problem requires multiplication or division.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

## Video

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## Worksheet

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## Starter quiz

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### 4 Questions

Q1.
4L and 150ml multiplied by 3
12L and 450L
12L and 500L
12L and 500ml
Q2.
4L and 800ml divided by 4
16L and 3200ml
16L and 320ml
1L and 100ml
Q3.
Match the word problem to the bar model.
Option 1
Option 2
Q4.
Match the bar model to the word problem.
Correct answer: Alex has a filling his bucket of water every day with equal amounts. After five days it has reached maximum capacity of 45 L. How much water was he adding each day?
Alex has a has a bucket of water with a capacity that is five times greater than Pierre’s. How much water is there in Pierre’s bucket?
Alex has been adding 45L to his bucket each day. After five days how much water will he have in his bucket?

## Exit quiz

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### 4 Questions

Q1.
16L and 250ml x 4
16L and 900ml
16L and 950ml
16ml and 1000ml
Q2.
What statement matches the bar model
We know the part is 16. We don't know the whole. To calculate the whole we need to multiply the part by 2.
Correct answer: We know the whole is 16. We don't know the part. To calculate the part we need to divide the whole by 2.
We know the whole is 16. We don't know the part. To calculate the part we need to multiply the whole by the number of parts.
Q3.
Match the word problem with the correct bar model
Option 1
Option 2