Everyday maths for Health and Social Care and Education Support 1

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.

Free course

# 4.2 Using pints and gallons

You might still see the old, imperial units for measuring volume.

• 20 fluid ounces (fl oz) = 1 pint (pt)
• 8 pts = 1 gallon (gal)

A pint is a little more than half a litre.

A fluid ounce is about 30 ml.

Some measuring jugs show both metric and imperial units.

Figure 35 Using metric and imperial units

## Example: Residential care home

The staff and residents in a residential care home consume one gallon of milk each day. How many litres is this?

### Method

A pint is a little more than half a litre, so you can get just over a litre for every 2 pints.

There are 8 pints in a gallon, this is just over 4 litres of milk

Now try the following activity. Remember to check your answers once you have completed the questions.

## Activity 11: Converting between metric and imperial measurements

1. A patient who was involved in a car accident requires 1.5 pints of blood from a transfusion. Each donated bag of blood contains 470ml. How many bags does the patient need for the transfusion? Give your answer to the nearest whole number.
1. A 1-month old baby consumes approximately 800ml of milk per day. How many pints is this?

1. You know that:
• 1 pint = 568 ml

So 1.5 pints = 1.5 x 568ml = 852ml

Divide the amount in ml by 470ml to find out how many bags are needed:

• 852 ÷ 470 = 1.8

Rounding this to the nearest whole number, the patient will need 2 bags of blood.

1. You know that:
• 1 pint = 568 ml

So you need to divide 800ml by 568ml to find the number of pints:

• 800 ÷ 568 = 1.4 pints

## Summary

In this section you have learned how to:

• identify the standard units for measuring volume or capacity
• measure volume (or capacity)
• compare metric and imperial measures.
FSM_SSH_1