Create your own centimeter ruler. Then, estimate and measure with lengths with it. Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Think through ...
NARRATOR: I’ve got an idea, you can estimate the length in steps. The go-kart is ten steps in length and the limousine is 30 steps in length. 30 is three times ten. That makes the limousine three ...