Is there a quick way to work out whether a fraction terminates or recurs when you write it as a decimal?
Take turns to place a decimal number on the spiral. Can you get three consecutive numbers?
Find out why these matrices are magic. Can you work out how they were made? Can you make your own Magic Matrix?
Can you match pairs of fractions, decimals and percentages, and beat your previous scores?
The items in the shopping basket add and multiply to give the same amount. What could their prices be?
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?
Find the product of the numbers on the routes from A to B. Which route has the smallest product? Which the largest?
Use the clocks to investigate French decimal time in this problem. Can you see how this time system worked?
Is it cheaper to cook a meal from scratch or to buy a ready meal? What difference does the number of people you're cooking for make?