NRich Making Pairs of Numbers

If you have ten counters numbered 1 to 10, how many can you put into pairs that add to 10 Can you use them all?

Say how you got your answer.

Now put the counters into pairs to make 

12

• Can you use them all?
• Say how you got your answer.

Now put the counters into pairs to make 

13

• Can you use them all?
• Say how you got your answer.

Now put the counters into pairs to make 

11

• Can you use them all?
• Say how you got your answer.