These subtraction problems are written based on Montessori Math color coding for each place value: Unites and Thousands are green, Tens are blue and Hundreds are red. The cards start with static subtraction problems and they get more difficult as you go along. Wherever student sees a start, should go a teacher and ask for a lesson. Each paper needs to be cut into four, mounted and then laminated.
To be used with: Golden Bead Materials, Stamp Game and Short Bead Fame.