Ratio and proportion

Can you work out the height of Baby Bear's chair and whose bed is whose if all the things the three bears have are in the same proportions?

How can the school caretaker be sure that the tree would miss the school buildings if it fell?

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?

The triangles in these sets are similar - can you work out the lengths of the sides which have question marks?

Use the Cuisenaire rods environment to investigate ratio. Can you find pairs of rods in the ratio 3:2?

If it takes four men one day to build a wall, how long does it take 60,000 men to build a similar wall?

In a race the odds are: 2 to 1 against the rhinoceros winning and 3 to 2 against the hippopotamus winning. What are the odds against the elephant winning if the race is fair?

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?

When Charlie retires, he's looking forward to the quiet life, whereas Alison wants a busy and exciting retirement. Can you advise them on where they should go?