Friends and Spares helps students add three numbers quickly. Instead of counting on one by one, they spot the two numbers that make 20 (the friends), then add the remaining number (the spare).
Best for: Years 1 to 2
How to play
Look at the three-number sum.
Find the two numbers that are friends to 20.
Add the spare number onto 20.
Type the total and check your answer.
Teaching tips
Make sure students are confident with Friends to 20 first.
Ask students to explain which numbers they paired and why.