• "Rainbow Facts" or "Best Friends"

    Rainbow
     


      

    There are a few addition facts that are called complements of 10. At Birches School we like to call them "Best Friends of Ten" or the "Rainbow Facts".

     

    These are the "Best Friends of Ten" or "Rainbow Facts"..

     

    0 + 10 = 10           10 + 0 = 10

     

    1 + 9 = 10             9 + 1 = 10

     

    2 + 8 = 10             8 + 2 = 10

     

    3 + 7 = 10             7 + 3 = 10

     

    4 + 6 = 10             6 + 4 = 10

     

    5 + 5 = 10


    Notice that 5 + 5 = 10 does not have a turnaround fact and that is because it is a Doubles fact!