Look closely to see if you can find D.C.’s error in his addition.
Lesson 204
Math
1st Grade
Represent a teen number using a number bond to solve a Mystery Math Mistake. Use Notice and Wonder with a [...]
2nd Grade
Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Think through creating [...]
3rd Grade
Warm up with a Mystery Math Mistake as you add two 3-digit numbers using a partial sums strategy. Use a [...]
