Decimals

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?

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?

Use the clocks to investigate French decimal time in this problem. Can you see how this time system worked?

Find out why these matrices are magic. Can you work out how they were made? Can you make your own Magic Matrix?

What is the mean of 1.2 recurring and 2.1 recurring?

Try to solve this very difficult problem and then study our two suggested solutions. How would you use your knowledge to try to solve variants on the original problem?

What does the empirical formula of this mixture of iron oxides tell you about its consituents?