Make a Ten to Add

8 + 5 = 8 + 2 + 3 = 13.

Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.

What children learn in Level 24

10 plus a number is easy: 10 plus 3 is 13. So let's turn hard problems into 10 plus something!
Here is 8 plus 5. The first ten frame has 8. It needs 2 more to make 10.
Your turn! Tap the blue counters to fill the ten.
Now it's 10 and 3 left over. 10 plus 3 is 13! So 8 plus 5 is 13.
Here's a string of problems that work the same way: 9 plus 4 is 10 plus 3, 13. 9 plus 5 is 10 plus 4, 14. 9 plus 6 is 10 plus 5, 15. See the pattern?
Fill the ten, then add what's left.

Georgia's K-12 Mathematics Standards:

1.NR.2.1 — Use a variety of strategies to solve addition and subtraction problems within 20.
1.NR.2.2 — Use pictures, drawings, and equations to develop strategies for addition and subtraction within 20 by exploring strings of related problems.