Order of operations

The Order of Operations is a set of rules that defines the sequence in which mathematical operations should be done in. All mathematicians (and computers) across the world follow this rule.

BIDMAS

The acronym BIDMAS (or BODMAS) is used to remember the order to do calculations.

B: Brackets- Perform operations inside brackets first.

I: Indices - Calculate indices (or powers).

D: Division.

M: Multiplication.

A: Addition.

S: Subtraction.

Using BIDMAS

$$3+2\times (1+4{)}^2$$

B - Work out the 1 + 4 inside the bracket.

$$3+2\times (5{)}^2$$

I - Square the 5.

$$3+2\times 25$$

M - Multiply the 2 and 25.

$$3+50$$

A - Add the 3 and 50.

$$53$$