(playful music) (electronic bells ringing) - [Children] Math Mights! - Welcome back 1st grade Math Mights. I'm Mrs. Markovich and I'm here to do so many fun things in math with you today. Let's start ...

Join Mrs. Markavich for a missing addend word problem with Professor Barble! Next look out for two of favorite Math Might friends D.C. and Value Pak as they help use learn to add two-digit number in ...

Column addition is a way of adding numbers together. It's helpful when you're adding two-digit or three-digit numbers together. When you do column addition, you lay out the numbers you are adding ...