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Check out Graham's Building Fact Fluency Toolkit for addition and subtraction.

standard: 5.NBT.7

Download the Task

Act 1

Watch the video

How long is the big paperclip? Estimate
Write an estimate you know is too high. Write an estimate you know is too low.

Act 2

How many times longer the large paperclip is compared to the small one.

Act 3

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