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What's My Weight?

There are four equal weights on one side of the scale and an apple on the other side. What can you say that is true about the apple and the weights from the picture?

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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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Oranges and Lemons

On the table there is a pile of oranges and lemons that weighs exactly one kilogram. Using the information, can you work out how many lemons there are?

Money Measure

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

How can you make one weighing that will tell you something about all the boxes at once?

How many boxes are different?

Is it worth taking different coins out of the different boxes?