Stage: 2 Challenge Level: 
Can you substitute numbers for the letters in these equations?
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Did you know? Mathematical problems in which you replace digits with letters that make words or even phrases are called CRYPTARITHMS.
Addition & subtraction. Trial and improvement. Investigations. Working systematically. Combinations. Visualising. Place value. Using symbols. Interactivities. Multiplication & division.
Published September 2001.
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