Stage: 4 Challenge Level: 
Each letter represents a different positive digit
$$ \frac {AHHAAH}{JOKE}= HA $$
What are the values of each of the letters?
Index notation/Indices. Fractions. Working systematically. Divisibility. Mathematical reasoning & proof. Commutative, associative and distributive laws. Number bases. Factors and multiples. Modulus arithmetic. Place value.
Published November 2004,December 2004.
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