01/25/2021 Math Mights Add 2-Digit Numbers Season 3 Episode 304 | 15m 59sVideo has Closed Captions| CC Join Mrs. Markavich for a word problem with her friend Professor Barble!

Use Base-Ten diagrams and standard, expanded, and word forms to represent numbers. Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Find Which One ...

If you can add two 3-digit numbers, then you can use the same method to add 4-digit numbers together. Just remember to add on the number that you have regrouped.