1. Five per cent of 50 is 2.5.
2. One teaspoon is approximately equivalent to 5 millilitres.
3. How much is 7.2 kg divided by 15?
4. Subtract 4 litres from 13.
5. BMI equals height divided by weight squared.
6. What do you get when you subtract 52 from 100?
7. 150 mg is added to 500 mg to make a total dose of 650 mg.
8. Three quarters of 100 litres equals 75.