The Egyptians expressed all fractions as the sum of different unit
fractions. The Greedy Algorithm might provide us with an efficient
way of doing this.
A jigsaw where pieces only go together if the fractions are
The number 2.525252525252.... can be written as a fraction. What is
the sum of the denominator and numerator?
This package is designed around work on percentages which is
outlined in the KS3 Mathematics Framework. One NRICH game and one
problem have been identified to support the work on percentages in
each. . . .
Find the decimal equivalents of the fractions one ninth, one ninety
ninth, one nine hundred and ninety ninth etc. Explain the pattern
you get and generalise.
Match the cards of the same value.
What is the last digit of the number 1 / 5^903 ?
A task involving the equivalence between fractions, percentages and
decimals which depends on members of the group noticing the needs
of others and responding.
Where will the point stop after it has turned through 30 000
degrees? I took out my calculator and typed 30 000 ÷ 360. How
did this help?