Question

Which measurement is most accurate to describe the weight of a quarter?

630 g
63 mg
6.3 g
0.63 kg

Answer 1

63 mg it is the smallest measurement listed.

Answer 2

Answer: 6.3 g

Explanation:

First, we need to put every mesure into the same unit. Let's put all into grams.

- kg would be too heavy for a quarter (consider that we use kg to weight people, for example)

- mg is too light (consider that we use mg to weight pills, for example)

We know that

1 kg = 1000 g

1 g = 1000 mg

630 g = 630 g

63 mg = 63/1000 = 0.063 g

6.3 g = 6.3 g

0.63 kg = 0.63*1000 = 630 g

The most suitable answer for a quarter is 6.3g, because 630 g would be too heavy and 0.063 g would be too light.