Subtraction Wrap-ups®
Product Number: LWU-KSUB
$9.99
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 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.