Stage: 3 Challenge Level: 
The number $5374$ is $5000+300+70+4$
What does this become once the $5$ has moved to the back of the queue?
How many 5s, 3s, 7s and 4s are there when you combine the two numbers?
Number operations - generally. Place value. Stage 3&4 Investigation. smartphone. Creating expressions/formulae. Workshop. Divisibility. Disproof by counterexample. Generalising. Factors and multiples.
Published April 1998,October 2008,February 2010.
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