Arithmetic pyramid Wall: Number Space up to 1000 - Back To School EditionDo your students love tricky tasks? Then these math pyramids are just the thing! With this material, they can practice addition and subtraction in the number range up to 1000 in a playful and effective way. You get a versatile package that is perfect for various occasions throughout the school year. What you can expect:50 varied arithmetic pyramids: Each pyramid offers a new challenge for your learners.Numbers up to 1000: I