I am an atronomer and my camera lens is 1.372m across. My friend George is a spy and he has a camera lens of 2.9cm across. My aunt Marie is a surgeon and she has a lens 1.5cm across.
1) How many more metres across is my camera lens than Marie's?
2) How many fewer metres across is Marie's camera lens than George's?
3) Around how many of George's camera lens' would fit across mine?
1.372m 2.9 cm = 0.02m 1.372m - 0.029m = 1.343 m It is 1.343 m greater than Marie's. 2) 0.029m - 0.015m = 0.014m Marie's camera is 0.014m less than George's 3) 1.372/0.029 = 47.3 -> 47 would fit across mine