🔢 Counting & Cardinality
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Counting to 100

Count all the way to one hundred — one number at a time!

100 is a big number, but counting to it is easy once you learn the pattern. After you finish a group of ten, the next group begins. After 19 comes 20, after 29 comes 30, and so on!

The counting groups (decades):

1 → 10 (one, two, three … ten)
11 → 20 (eleven, twelve … twenty)
21 → 30 (twenty-one, twenty-two … thirty)
31 → 40 (thirty-one … forty)
41 → 50 (forty-one … fifty)
51 → 60 (fifty-one … sixty)
61 → 70 (sixty-one … seventy)
71 → 80 (seventy-one … eighty)
81 → 90 (eighty-one … ninety)
91 → 100 (ninety-one … ONE HUNDRED! 🎉)
🔁The ones repeat every decade
21, 22, 23, 24, 25, 26, 27, 28, 29, 30
31, 32, 33, 34, 35, 36, 37, 38, 39, 40

See how the last digit (1–9) repeats in every row?
✏️ Try It!

What number comes after 39?

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Remember This!

Try counting while you clap, jump, or take steps! Moving your body while counting makes it easier to remember.

Practice with CalcVerse
🍎Visual Object Counter
Take Quiz 📝 — 25 Questions