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The Four 4’s Problem

Can you use exactly Four 4’s to create expressions (using any operation) that equal the numbers from 1 to 20?

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Record your solutions (and take credit for your answers in the following slides by writing your name)

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If you have a different solution from one that is already shown, then add yours as well!

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Expressions equal to 1

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Expressions equal to 2

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Expressions equal to 3

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Expressions equal to 4

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Expressions equal to 5

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Expressions equal to 6

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Expressions equal to 7

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Expressions equal to 8

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Expressions equal to 9

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Expressions equal to 10

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Expressions equal to 11

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Expressions equal to 12

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Expressions equal to 13

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Expressions equal to 14

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Expressions equal to 15

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Expressions equal to 16

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Expressions equal to 17

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Expressions equal to 18

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Expressions equal to 19

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Expressions equal to 20

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Expressions equal to numbers greater than 20