2. Order of Operations
L Lonely Family ( )
E Easy Family X÷
T Totally Easy Family +-
3. Order of Operations
Lonely Family is top of the family
Easy Family is second in the family
Totally Easy family is last in the family
4. Order of Operations
The calculation for order of operations
is as follows:
• Lonely family, ( ) , must be done
first.
• Easy Family, X ÷ , must be done
second.
• Totally Easy family, + - , must be
done last.
5. Order of Operations
If the operations are from the same
family, then you work from left to right.
Example : Evaluate 4 + 3 - 5
4 + 3 - 5 (All operations belong to L ( )
totally easy family )
E X÷
=7–5 (Work from left to right)
T +-
=2
6. Order of Operations
Example : Evaluate 4 X 3 ÷ 6
4 X 3 ÷ 6 (All operations belong to
easy family )
= 12 ÷ 6 (Work from left to right) L ( )
=2 E X÷
T +-
7. Order of Operations
Example : Evaluate 5 + 7 X 2
(Operations belong to easy
5 + 7 X 2 family and totally easy family )
(Cancel out Lonely
family)
L ( )
(Work out the easy family
= 5 + 14 first) E X÷
(Then, cancel out easy
family) T +-
= 19 (Then, work out totally easy
family from left to right)
8. Order of Operations
Example : Evaluate 10 - 2 X 20 ÷ 8
10 - 2 X 20 ÷ 8 (Operations belong to easy
family and totally easy family )
(Cancel out Lonely
family)
L ( )
(Work out the easy family
= 10 - 5 first from left to right) E X÷
(Then, cancel out easy
family) T +-
(Then, work out totally easy
=5 family from left to right)
9. Order of Operations
Example : Evaluate 3 X (5 + 1) ÷ 9
3 X (5 + 1) ÷ 9 (Operations belong to Lonely
family Easy family)
(Work out Lonely family
first)
L ( )
=3 X 6 ÷9 (Then, cancel out Lonely
family & Totally easy E X÷
family)
(Then, work out easy family
T +-
=2
from left to right)
10. Order of Operations
Tips
Always write out L ,E , T as your
working
Follow the order of the families ( 1: L,
2: E, 3: T) to evaluate the question.
Work from left to right if the operations
are from the same family.
