4, 5, ?, 7, 8 — which number is hiding? A free number sequence game for preschoolers, from 1 to 20. Download 123 Numbers for more counting adventures.

What kids learn

  • number sequence
  • number recognition
  • counting to 20

Best for ages 3-6. Plays right in the browser on any phone, tablet or computer — no download, no sign-up, and no data collection.

Love it? Get the full 123 Numbers app on Google Play for more levels and offline play, or browse all free kids games.