Brackets · Orders · ÷ · × · + · − — the order of operations!
B
Brackets ( ) { } [ ] — solve first
O
Orders — Powers & Roots (a², √a)
D
Division ÷ — left to right
M
Multiplication × — left to right
A
Addition + — left to right
S
Subtraction − — left to right
1
Brackets — solve inside brackets first
2
Orders — powers & roots
3
Division — left to right
4
Multiplication — left to right
5
Addition — left to right
6
Subtraction — left to right
Ignoring Brackets
2 + (3×4): Wrong 20, Right 14
× before ÷
12 ÷ 3 × 2: Wrong 2, Right 8
Not left-to-right
9 − 6 ÷ 2 + 2: Wrong 4, Right 8
Forgetting powers/roots
√16 + 3²: Wrong 25, Right 13
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