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My friends and I love pizza. Can you help us share these pizzas equally?

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Grandma found her pie balanced on the scale with two weights and a quarter of a pie. So how heavy was each pie?

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Red Balloons, Blue Balloons

Katie and Will have some balloons. Will's balloon burst at exactly the same size as Katie's at the beginning of a puff. How many puffs had Will done before his balloon burst?

Fractions in a Box

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

Remember the booklet in the corner of the box is square, so how many holes could it take up?
The whole box, without the space for the booklet, would fit $100$ discs, so the number of discs must be $100$, less the square number taken up by the booklet.
What do you know about the factors of the total number of discs?