Objective:
Follow the clues to discover the mystery number in each box at the right. Each clue tells you a number that cannot be the mystery number.

Resources:
pencil & paper

Teacher Preparation:
listing the number clues

Procedure:
It's not the average of 11,9,8 & 12.
It's not the product of 4 & 15.
It is not the missing number in 35 divided by n = 5.
It is not an estimated quotient of 37 divided by 6.
It is not the quotient of 20 divided by 5.
The mystery number is:_________

Variations/Options:
Clue numbers: 7/5; 4/10; 6/60

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