LET’S TRY ONE
Which is odd: 10, 12, 13 or 14?
13
Pairing 13 objects leaves one object over.
Learning steps & teaching tips
Find numbers that leave one object when arranged in pairs.
- Compare odd and even totals using matched pairs.
- Work through the example. Explain how its evidence supports the answer.
- Try a new question; use the explanation to check your thinking.
Try it together
Write or draw your own example with different numbers. Solve it, then ask a partner to check the method as well as the answer.
Compare odd and even totals using matched pairs.