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BGCSE CORE
order of operations

When performing calculations, there is a specific order you must follow in order to get a correct answer. Often the acronym used to remember the order is BIDMAS or BODMAS. B=brackets, I=indices (O=Orders-powers and roots), D=division, M=multiplication, A=addition, S=subtraction. Once you perform calculations in this order, you should get a correct answer. In recent years, the word PEMDAS has also been used. P=parentheses, E=exponents (powers and roots), D=division, M=multiplication, A=addition, S=subtraction.
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Example 1: (2 + 4) × 5 ?
Parentheses first:
First (2 + 4) = 6,
then 6 × 5 = 30


Example 2: 4 + (6 × 2) ?
Brackets first:
First (6 x 2) = 12,
​then 4 + 12 = 16


Example 3: 30 + 5 × 3 ?
​=30 + 15
= 45

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You can remember by saying "Please Excuse My Dear Aunt Sally"....or
Pudgy Elves May Demand A Snack 
Popcorn Every Monday Donuts Always Sunday 
Please Eat Mom's Delicious Apple Strudels 
People Everywhere Made Decisions About Sums

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In the UK they say BODMAS (Brackets,Orders,Divide,Multiply,Add,Subtract),
In Canada they say BEDMAS (Brackets,Exponents,Divide,Multiply,Add,Subtract).
​It all means the same thing! It doesn't matter how you remember it, just so long as you get it right.
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​Click the calculator to make sure your order of operations is correct.

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LEVEL D WORKSHEETS
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WORKSHEETS

BODMAS with dice
BODMAS Fun Page
POWERPOINT
Order of Operations

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