An even number splits into pairs with nobody left over. An odd number always has one left alone. Even numbers end in 0, 2, 4, 6 or 8.
Worked example
Is 9 even or odd?
Answer:Odd
Put the dots in pairs. One dot is left without a partner, so 9 is odd. A quick trick: look at the ones digit. If it's 0, 2, 4, 6 or 8, the number is even. 9 ends in 9.
For grown-ups: Odd and even (pairing). Below: three problems to try with the worked answers, and a free printable sheet. Children can practise the same skill as a game, with no sign-up and no ads.
CCSS 2.OA.C.3
What this practises, for teachers
Practices odd and even (pairing) (2.OA.C.3). A printable sheet with its answer key, worked answers on the page, no accounts.
Put the dots in pairs. One dot is left without a partner, so 7 is odd. A quick trick: look at the ones digit. If it's 0, 2, 4, 6 or 8, the number is even. 7 ends in 7.
Is 13 even or odd?
Show the answer and how
Answer:Odd
Put the dots in pairs. One dot is left without a partner, so 13 is odd. A quick trick: look at the ones digit. If it's 0, 2, 4, 6 or 8, the number is even. 13 ends in 3.
Is 695 even or odd?
Show the answer and how
Answer:Odd
Put the dots in pairs. One dot is left without a partner, so 695 is odd. A quick trick: look at the ones digit. If it's 0, 2, 4, 6 or 8, the number is even. 695 ends in 5.