This is a lesson which introduces children to working out subtraction by finding the difference between the two 2-digit numbers numbers by using a number line. Follow the lesson and then on the SB there are 8 sums, 1 star and 8 sums, 2 star for them can choose from. I let them choose which level to start on. If they finish ask them to do the other sums. They must use a number line each time. PLEASE LEAVE FEEDBACK! I have attached a blank mult square for the starter. Plenary is marking their work-answers on the SB.