Fours

A Mathematical Challenge

Each team member will select a different color to show their work in.

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Record your name on the team roster using your chosen color.

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Each team member will use their chosen color to show their contributions to the challenge.

Fours Challenge

Goal…

To try and find every solution from 1 to 20 using only four 4’s.

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You must use exactly 4 fours...no more, no less!

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You can use any operation: + - x ÷

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You can also use exponents, parentheses, square roots and factorials.

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Your work must follow the order of operations.

1

2

4

3

5

6

7

8

9

10

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11

12

14

13

15

16

17

18

19

20

How did your team do?

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• Everyone contributed to the challenge.

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• We completed most of the challenge.

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• We enjoyed the challenge.

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• We learned something new, either about math or about a teammate.

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• Other...

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Check all that apply by dragging the checkmarks.