Doubling numbers

Double trouble!!

To get a double of a number, we add the same number to itself. Watch this Numberblocks episode on doubling:

Now have a go at writing double number facts to 10. Have a look at the example picture to help you get started. You will need two different coloured pencils to do this.  

Can you explain what you notice happening each time?

Adults:

I have found this great card game online for doubling, you can print it for free or make it yourself. 

Click here for the website