Grade 1 Math · Level 2, Add & Subtract to 20
Add Three Numbers Within 20
How the lesson starts: Add Three Numbers Within 20
Bruno's picnic
Hi friend! This is Bruno the bear. Bruno packs a picnic. He packs strawberries, bananas, and apples. That's three numbers to add! Let's help Bruno.
Two at a time
Bruno has 4 strawberries, 3 bananas, and 2 apples. Add two first. 4 + 3 = 7. Now add the last one. 7 + 2 = 9. Bruno has 9 snacks!
Keep your total
Try 5 + 6 + 4. First, 5 + 6 = 11. Hold on to that 11! Watch out! Don't start over. Now add 4. 11 + 4 = 15. Bruno has 15 snacks.