Sum or Difference

Digit Dog and Calculating Cat are are playing a game called sum or difference.

Rules

• Take turns to throw 2 dice.
• Find the sum of the two numbers OR the difference, then cover the number on your grid.
• The first one to cover all their numbers is the winner.

Download the game here

Encourage children to use the mathematical language:

The sum of …….and ………is …………..

The difference between …….. and …….. is………..

Ask:

Which numbers are more difficult to cover? Why do you think that is?

Do you make some numbers more often than others?

What if………..

…….you were making your own board? Which numbers do you think would be good to choose?

……you were only finding the sum of the dice? Which numbers would you put on the board so that you were the winner?

………you were only finding the difference? Would you choose the same numbers?