Question

It has been calculated that the average baby uses 3528 nappies which end up in landfill sites. There were 698,512 births last year in the UK. By rounding these figures to 1 significant figures, estimate the number of nappies that will be used. Give your answer in billions to 1 significant figure.

Answer 1

900000*4000=360000000000.

Answer 2

3 billion.

Explanation:

3528 x 698,512 = 2,464,350,336

So, your answer in billions to 1 significant figure is 3