Letâs add multiples of 10 to any two-digit number! Join Ms. Lassiter for lesson as she models using the Rekenrek, counting on, a number bond, coins, and a place value to add multiples of 10 to any two-digit number within 100. For this lesson, youâll need a whiteboard and dry erase marker or paper and pencil. If you have access to a printer, we also suggest accessing the Problem Set using the link below the video.
