Question

The energy saved by recycling one glass bottle will power a computer for 28 minutes. Estimate how many minutes a computer will run for by recycling 187 glass bottles. (Estimate by using 1 s.f.)

Answer 1

6000

Explanation:

round it off to the whole number

Answer 2

5,200

You can get this by multiplying the two numbers together. However, since there is only 2 significant figures, you have to round to that many.