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.
Is there a quick way to work out whether a fraction terminates or recurs when you write it as a decimal?
Can you express every recurring decimal as a fraction?
What do you notice about these families of recurring decimals?
A jigsaw where pieces only go together if the fractions are equivalent.
What is the last digit of the number 1 / 5^903 ?
Choose some fractions and add them together. Can you get close to 1?
Can you match pairs of fractions, decimals and percentages, and beat your previous scores?
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?