A fun and unique way to help students learn subtraction
Made of durable and long-lasting plastic to ensure product longevity
Each set has 10 self-correcting keys that total up to 120 subtraction facts ranging from 1-1 to 22-10
The Subtraction Wrap-ups come with 10 keys and cover facts from 1-1 to 22-10 and everything in between. Wrap the string from the problem on the left to the answer on the right. Simply turn it over to see if you got it right.