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MathSphere code-breaking puzzle worksheet for kids, teaching number substitution for secret messages.

$A math puzzle worksheet from MathSphere titled "Puzzle time: Code breaker," featuring a code-breaking activity where letters are replaced by numbers, with a cartoon mouse character and a code example to decode.$

A math puzzle worksheet from MathSphere titled "Puzzle time: Code breaker," featuring a code-breaking activity where letters are replaced by numbers, with a cartoon mouse character and a code example to decode.

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$Free Math Puzzles Worksheets pdf printable | Math Champions$