Stage: 2 Challenge Level: 
Using all four numbers 4, 6, 6 and 8, but using each number only once, there are over 60 different ways of getting the answer 24 by adding, subtracting, multiplying and dividing.
How many can you and your friends find?
Multiplication & division. Place value. Trial and improvement. Combinations. Investigations. Generalising. Working systematically. Factors and multiples. Interactivities. Addition & subtraction.
Published April 1999.
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