Everyday maths 2 (Wales)
Everyday maths 2 (Wales)

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

Everyday maths 2 (Wales)

2.1 Calculations with large numbers

The best way to get used to these types of calculations is to go straight into an example.

Example: Calculations with large numbers

Calculate the total population of Malta (0.4 million) and Cyprus (1.2 million).

Method 1

Work in shortened form:

  • 1.2 + 0.4 = 1.6 million

Method 2

Write the numbers in full:

  • 1 200 000 + 400 000 = 1 600 000 (1.6 million)

Activity 7: Calculations with large numbers

  1. Calculate the total turnover for Cambria Trading over the first quarter (3 months).

Table 3 Cambria Trading turnover

MonthProfit (£ million)
  1. Calculate the turnover of the last quarter.

  2. Calculate the difference in turnover between the first and last quarters.


    • a.Which month had the largest turnover?

    • b.Which month had the smallest turnover?

    • c.What is the difference between the largest and smallest turnovers?


  1. Profit in 1st quarter 1.2 + 0.9 + 0.85 = £2.95 million

  2. Profit in last quarter 1.08 + 1.8 + 1.65 = £4.53 million

  3. The difference is 4.53 − 2.95 = £1.58 million


    • a.November had the largest turnover at £1.8 million.

    • b.March had the smallest at £0.85 million.

    • c.The difference is 1.8 − 0.85 = £0.95 million.


In this section you have learned how to:

  • write large numbers in full and shortened forms

  • round large numbers
  • add and subtract large numbers.

Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has 50 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to University-level study, we offer two introductory routes to our qualifications. You could either choose to start with an Access module, or a module which allows you to count your previous learning towards an Open University qualification. Read our guide on Where to take your learning next for more information.

Not ready for formal University study? Then browse over 1000 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus371