Addition and Subtraction

Strategy 1 - Compensation - Level 2 Solve 2 & 3 digit problems by using tidy numbers 29 + 18 as 30 + 17.

Strategy 2 - Level 2 - Solve 2 & 3 digit problems by using place value 33 + 16 as 30 + 10 + 3 + 6 (split strategy)

                   Level 3 & 4 - To use the place value partitioning strategy.( decimal addition )

Strategy 3 - The reversilbility strategy 

Strategy 4 -  Equal Addition - Level 3 & 4  - To use equal addition to solve subtraction problems

Strategy 5  - Level 3  & 4 -To use standard written form for addition and subtraction (algorithm).

Strategy 6 - Level 4 - Solve addition and subtraction problems with negatives (integers).