Every whole number is one of two kinds: even or odd.
Here's the secret we'll uncover:
Even numbers split into equal pairs with none left over. Odd numbers always have one lonely one left over.
Tap Next and let's play with some numbers! 👉
An even number of socks makes perfect pairs. Tap the socks two at a time to pair them up.
6 socks — tap to pair:
Try pairing 7 socks. Watch what happens to the last one — that "leftover" is the clue for odd.
No pairs left over → even. One left alone → odd.
You don't have to draw socks for big numbers! Just look at the last digit.
EVEN last digits:
ODD last digits:
Is 38 odd or even? Look at the last digit (8) and choose:
Use the last-digit trick. Tap each number: tap once = even, tap again = odd. Make every tile match its real answer.
Count out loud: 1, 2, 3, 4… The numbers go odd, even, odd, even forever — like a zig-zag.
Tap ONLY the even numbers from 1 to 12. (They skip-count by 2!) 🎯
Tap each card to discover the rule. Try to guess first!
Reveal all three to spot the magic. ✨
You now know:
✅ Even numbers pair up with none left over.
✅ Odd numbers always leave one lonely.
✅ Quick trick: last digit 0 2 4 6 8 = even, 1 3 5 7 9 = odd.
✅ Numbers zig-zag odd, even, odd, even…
✅ even+even & odd+odd = even; odd+even = odd.
Next time you count steps, stairs or sweets — whisper "odd… even… odd…" and you'll always know! 🌟