Make a Ten

Split a number to finish a ten: 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 2

Ten is a super friendly number. 10 plus 3 is easy: 13! Let's use that.
Here is 8 plus 5. The first ten frame has 8. It has 2 empty boxes.
Your turn! Tap the blue counters to slide them into the empty boxes.
Now the first frame is full. That's 10! There are 3 left over. 10 plus 3 is 13. So 8 plus 5 is 13.
Try one more: 9 plus 4. Fill the ten!
9 and 1 more make 10, with 3 left over. 10 plus 3 is 13!
To make a ten: see how many the bigger number needs to reach 10. Take them from the other number. Then add what's left.

Georgia's K-12 Mathematics Standards:

2.NR.2.1 — Fluently add and subtract within 20 using a variety of mental, part-whole strategies.