Teachers, save “Addition and Subtraction | Number Walls” to assign it to your class.

Instructions for Addition Walls / Subtraction walls: 1. Understand the structure: The wall is pyramid-shaped. a/ Numbers at each level sum up to form the numbers above. b/ Numbers at each level are obtained by subtracting the numbers above from those below. 2. Check your work: a/ Ensure all sums are correct as you go along. b/ Verify all your subtractions are correct. Now, it's your turn to complete the addition walls and write your number sentences on the following pages. Enjoy the process!