Question

Give the product or quotient using the appropriate number of significant digits
(202 m)(45 m)(100 m)

1,500 g /35 g

Answer 1

100 m is not written with a "." after it is it? It's not "100. m"? If 100 m is just "100 m", then the most significant digits we can have in the product is 1. When we take 202 x 45 x 100 we get 909000. We must reduce this to 1 sig fig to get 900000

1,500 g / 35 g, we get 2 sig figs because 1500 has 2 and 35 has 2. 1500 / 35 = 42.857. We round to 2 sig figs -> 43.