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Kindergarten Math · World 3: Ten Frame Pond · Level 19
One More, One Less to 20
Say one more or one less for numbers 1 to 20.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 19
- One more than 15 is 16. It's the next number you count.
- One less than 15 is 14. It's the number you say just before.
- One more than 19 is 20. Two full ten frames!
- Your turn! Start at 12. Tap the number that is one more.
- Your turn! Start at 18. Tap the number that is one less.
- Try it with a grown-up! Say a number from 10 to 20. The other person says one more, then one less. Take turns!
Georgia's K-12 Mathematics Standards:
- K.NR.1.3 — Given a number from 1-20, identify the number that is one more or one less.