A helping hand

Check your answer.
Understand the working.

Try the problem first, then use a calculator to see how the numbers fit together.

Find a percentage, a share or the change between two numbers.

Add, subtract, multiply or divide. Get a simplified fraction.

Find the arithmetic mean of a list of numbers.

Turn two whole-number amounts into their simplest ratio.

Work out the sale price and savings in rupees.

Add, subtract, multiply or divide two numbers.

Check your answer.Understand the working.