Practise even and odd numbers to 20 worksheets the see-it-first way — Numbers from 2 to 20 drawn as counters in pairs — if one is left over with no partner, the number is odd. Every sheet prints with a matching answer key. Free, no signup.
Opens the builder set to numbers to 20 · 8 numbers per sheet · free, no signup.
A number is even if it splits into two equal groups with nothing left over, and odd if one is always left without a partner. Drawing the counters two-by-two makes it concrete: ten dots pair up perfectly (even), but eleven leaves one lonely dot (odd). Children decide parity by trying to pair the dots, long before they memorise any rule.
Quick way to teach it: Pair the counters two at a time, like matching socks. If every dot finds a buddy the number is even; if one is left over it's odd. Soon kids notice the even numbers always end in 0, 2, 4, 6 or 8.
Pair the counters two at a time, like matching socks. If every dot finds a buddy the number is even; if one is left over it's odd. Soon kids notice the even numbers always end in 0, 2, 4, 6 or 8. Print a fresh sheet, work a few numbers together each day, and check with the answer key — short, regular practice beats one long session.
This is usually taught in Kindergarten & Grade 1. A number is even if it splits into two equal groups with nothing left over, and odd if one is always left without a partner. Drawing the counters two-by-two makes it concrete: ten dots pair up perfectly (even), but eleven leaves one lonely dot (odd). Children decide parity by trying to pair the dots, long before they memorise any rule.
An even number can be split into two equal groups with nothing left over — 0, 2, 4, 6, 8 and any number ending in those digits. An odd number always leaves one left over — 1, 3, 5, 7, 9 and any number ending in those. Every whole number is exactly one or the other.
Zero is even. It splits into two equal groups (nothing and nothing) with nothing left over, and it sits between two odd numbers, −1 and 1, in the counting pattern. Its last digit is 0, which is one of the even digits.