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A mini investigation for superbrains. How many ways can you make 100, just using the numbers and signs shown?

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Mini investigations into how many different ways totals can be made from three numbers.

Can you find 10 different ways of making 12 with 3 cards? (One card is zero, which makes it trickier!)

Three very athletic runners sharing a 19 mile relay. They each run an odd number of miles. How could they do this?

Making 2-digit numbers.

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