Look closely to see if you can find D.C.’s error in his addition.
Lesson 203
Math
2nd Grade
Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. What do you [...]
3rd Grade
Warm up with a Mystery Math Mistake as you add two 3-digit numbers using a partial sums strategy. Use strategies [...]
Kindergarten
Can you help dotson with his counting collection?
