Unit 4 Section 3 : Order of operations
This section covers the order in which operations are carried out.
The two main methods taught for working out the order of operations are BODMAS and BIDMAS.
If more than one operation in a calculation has the same precedence, the operations are carried out from lefttoright.
Example Question
Calculate:
(a) (3 + 2) × 6  8
(b) 4 × 6 + 18 ÷ 2
(c) (17  2) ÷ 5 + 6
Practice Questions
Work out the answer to each of these questions then click on the button marked
to see whether you are correct.
(a) What is 3 + 6 × 2?
(b) What is 6 × 5  7 × 4?
(c) What is 8 × 20 ÷ 4  3?
Exercises
Work out the answers to the questions below and fill in the boxes. Click on the
button to find out whether you have answered correctly. If you are right
then will appear and you should move on to the next
question. If appears then your answer is wrong. Click
on to clear your original answer and have another go.
If you can't work out the right answer then click on
to see
the answer.
You have now completed Unit 4 Section 3
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