Addition and subtraction using known facts

posted 7 Oct 2016, 03:47 by Katy Godfrey
This week in maths we have been using addition and subtraction facts that we already know to help us solve trickier calculations. 
E.g. if we know that 5 + 3 = 8 then we can also work out 15 + 3, 25 + 3, 35 + 3 etc.
We have also been doing some tricky problem solving using this.

Practice some addition and subtraction at home or play these games: