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Order of Operations

Always use BODMAS (also known as BIDMAS or PEMDAS):

BODMAS order of operations layout

Brackets
Of (or other operations like powers/roots)
Divide
Multiply
Add
Subtract

Examples

\[ 12 \div 3 \times 4 \] \[ = 4 \times 4 \] \[ = 16 \]
\[ 7 + (6 \times 5) \] \[ = 7 + 30 \] \[ = 37 \]
\[ 20 - 12 \div 3 \] \[ = 20 - 4 \] \[ = 16 \]
\[ (18 - 6) \div 3 \] \[ = 12 \div 3 \] \[ = 4 \]
\[ 4 + 6 \times (3 + 2) \] \[ = 4 + 6 \times 5 \] \[ = 4 + 30 \] \[ = 34 \]
\[ 30 \div (2 \times 3) \] \[ = 30 \div 6 \] \[ = 5 \]
\[ (8 + 4) \div 2 + 6 \] \[ = 12 \div 2 + 6 \] \[ = 6 + 6 \] \[ = 12 \]