Addition & Subtraction Workshop - Great Missenden

Expanded Method for Subtraction• Use an informal paper and pencil strategy towork out some calculations.• e.g 428 – 174 =300 120400 20 8- 100 70 4200 50 4This method ensures the children understand the realvalue of each digit in the numbers and the real valueof what they “borrow” from the column to the left.