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Find the Difference printable sheet
Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it.
For example: 5 - 2 = 3
You could use this interactivity to try out your ideas:
Can you find more than one solution?
Can you find all the possible solutions? How do you know you have found them all?
Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?