1. Adding 2-digit numbers with regrouping

2. Always add the ones place first. 45 + 47

3. Always add the ones place first. 45 + 47 2 1

4. 5 ones + 7 ones = 1 ten + 2 ones or 12 45 + 47 2 1 2 ones1 tens Since you cannot put 12 ones, you must regroup by putting the 2 in the ones place and the 1 in the tens place.

5. Next, add the tens. 45 + 47 1 2 9

6. Let’s try regrouping again! 53 +27 +27

7. ones. Add the ones first. 53 +27 +27 0 1

8. tens. Now, add the tens. 53 +27 +27 0 1 8

9. 64 + 59 3 REMEMBER: ones You must add the ones place first. Regroup. 1 12 tens Add the tens place.

10. 77 + 28 Your turn! ones. Add the ones. 5

11. 77 + 28 Your turn! Regroup. 5 1 tens. Add the tens. 10