Grade 2 Math · Level 5, Full Grade-2 application
Multi-Addend Addition
Add 3-4 (occasionally 5) one- and two-digit addends with regrouping, using friendly-pair grouping strategies, missing addends, and error detection.
Questions like
- 28 + 36 + 17 = ?
- 3 groups have 24, 17, and 31 items. How many in all?
How the lesson starts: Multi-Addend Addition
Poppy's balloon party
Hello! Poppy is planning a party! She has three bags of balloons. Red has 6, blue has 4, and green has 5. How many balloons in all? Let's add three numbers!
Find a friendly ten
6 red balloons. 4 blue balloons. 5 green balloons. Look! 6 and 4 make 10. Ten is a friendly number. Then 10 + 5 = 15. Poppy has 15 balloons!
Line up the places
Bigger bags: 14, 3 and 12. Line them up by place. Add the ones: 4 + 3 + 2 = 9. Add the tens: 1 + 1 = 2 tens, that's 20. 20 + 9 = 29 balloons!