![Tens and Ones place-value-chart: 2 yellow dots in the tens section, and 1 blue dot in the ones section. Under that, is another 2 yellow dots in the tens section, and 4 blue dots in the oens section.](https://s3.amazonaws.com/cms.accelerate-ed.com/image/331662e1-d2f7-4821-9971-1127e37fc0a0.png)
What is the sum? Use the place-value chart to help.
21 + 24 = ____
45
Goal:
Goal:
Goal: How can you use fact families to add?
Click to see Sofia and Logan’s beans!
21 beans
24 beans
How can we find how many beans they have in all? We can add!
21 + 24 = ?