Everyday maths 1 (Wales)
Everyday maths 1 (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 1 (Wales)

10 A quick reminder: checking your work

Next you can take a quiz to review what you have learned in this session. For this and later quizzes in the course you should check your answers. A check is an alternative method or reverse calculation – you may have heard this being called an inverse calculation. If the check results in a correct answer, it means that your original sum is correct too. For example, you may have made the following calculation:

  • 20 – 8 = 12

A way of checking this would be:

  • 12 + 8 = 20

Alternatively, if you wanted to check the following calculation:

  • 80 × 2 = 160

A way of checking this would be:

  • 160 ÷ 2 = 80

If you have carried out several calculations to get to your final answer, you only need to reverse one as a check.


Live in Wales? Free your ambition with a paid part-time course with the OU in Wales.

With grants of up to £4,500* to help with living costs, and tuition fee loans to cover course fees,
now's the time to take that next step.

Find out more

*Eligibility rules apply for financial support.