Let's look at an example. What is 7 + 5? You can use a tens frame and some counters to help work out the answer. You know that the answer must be bigger than 10, because 7 and 3 make a number bond ...

Here’s another example of how to use ten frames when doubling. This time the ten frame has 6 counters. There is not enough room to add 6 more counters to double 6. So you need an extra ten frame.