Ratio and proportion
problem
Orbiting Billiard Balls
Age
14 to 16
Challenge level
What angle is needed for a ball to do a circuit of the billiard table and then pass through its original position?
problem
Tin Tight
Age
14 to 16
Challenge level
What's the most efficient proportion for a 1 litre tin of paint?
problem
Mixing More Paints
Age
14 to 16
Challenge level
Can you find an efficent way to mix paints in any ratio?
problem
Mixing Paints
Age
11 to 14
Challenge level
Can you work out how to produce different shades of pink paint?
problem
Cereal mix
Age
11 to 14
Challenge level
A farmer is supplying a mix of seeds, nuts and dried apricots to a
manufacturer of crunchy cereal bars. What combination of
ingredients costing £5 per kg could he supply?
problem
Little Man
Age
5 to 7
Challenge level
The Man is much smaller than us. Can you use the picture of him next to a mug to estimate his height and how much tea he drinks?
problem
Nutty Mixture
Age
7 to 11
Challenge level
Use the ratio of cashew nuts to peanuts to find out how many
peanuts Rachel has. What would the ratio be if Rachel and Marianne
mixed their bags?
problem
Blackcurrantiest
Age
5 to 7
Challenge level
Can you decide whose drink has the strongest blackcurrant flavour
from these pictures?