**BIDMAS**

**B**rackets** ****I**ndices** D**ivision** M**ultiplication** A**ddition** S**ubtraction

BIDMAS is a mnemonic to help us to remember the correct order in which to do calculations.

If we had, say, 7 + 3 x 2 and did the calculation from left to right 7 + 3 = 10. We then multiply by 2 and the answer is 20

This answer is wrong because we did the calculation in the wrong order. BIDMAS tells us that we must do multiplication before addition.

So, 3 x 2 is 6. We can add the 7 now to get 13. By using BIDMAS we get the correct answer.

Always resolve **B**rackets first. Then **I**ndices. **D**ivision and/or **M**ultiplication next and finally **A**ddition and/or **S**ubtraction.