Expanded Column Method
Use the expanded column method to add 2- and 3-digit numbers.
Year 2 (Group A)
- To add 2-digit numbers using 10p and 1p coins (using partitioning) with totals less than 100.
10p coins and 1p coins can be used to make each price of an object.
- How can we add 70p and 15p?
- That’s easy: add 15 by adding 10 then 5!
- So the total is 85p.