Find the error Mrs. McCartney and Value Pak made in their addition.

Join Mrs. Ignagni for a Mystery Math Mistake with T-Pops. See if you can be a detective and figure out what step T-Pops forgot in the traditional method!

Explore the Multiply by 4 facts using the grouping of objects and arrays. Compete against characters to see who finds the product first. Practice with the commutative property of multiplication and 4's. Use multiplication facts you already know to help find the product when one factor is 4.