LET’S TRY ONE
Find the missing number: 3 + ___ = 7.
4
7 minus the known part 3 is 4.
Learning steps & teaching tips
Find the part needed to make a total up to ten.
- Count on from the known part, or subtract it from the whole.
- 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.
Count on from the known part, or subtract it from the whole.