Decimals

Is there a quick way to work out whether a fraction terminates or recurs when you write it as a decimal?

Use two dice to generate two numbers with one decimal place. What happens when you round these numbers to the nearest whole number?

What happens when you round these numbers to the nearest whole number?

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?

A task involving the equivalence between fractions, percentages and decimals which depends on members of the group noticing the needs of others and responding.

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

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 is the mean of 1.2 recurring and 2.1 recurring?

Find the product of the numbers on the routes from A to B. Which route has the smallest product? Which the largest?

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?