Play a game of Number Boggle. Lay out 16 cards in a 4x4 grid. Write down as many sums as you can find. You can go forwards or backwards and diagonally. For example if you have one row with the following numbers:
2 3 6 9
The sums you could get from this would include 2 x 3 = 6, 6/3 = 2,
3 + 6 = 9 and 9 - 6 = 3.
If you want an extra challenge, you can time yourself. Please write the sums into your maths practice book (medium red book).