Grade 3 · Unit 1: Number and place value

Odd and even

Can it be split into pairs?

Partners

Can everyone in the class find a partner? If the number is even, yes. If it is odd, one person is left over.

Pairs or one left over?

8 makes 4 pairs. 8 is even. 9 would make 4 pairs and 1 left over. 9 is odd. Every even number can be halved exactly.

Look at the ones digit

Only the ones digit decides if a number is odd or even. 3456 is even because 6 is even. 7891 is odd because 1 is odd.

Odd and even rules

even + even = even (4 + 6 = 10) odd + odd = even (3 + 5 = 8) even + odd = odd (4 + 3 = 7)

What I learnt

• I can tell if a number is odd or even.
• I can explain the rules for adding odd and even numbers.