Question

Which measure is greatest?
A.
7 kg
B.
68.1 cg
C.
700 mg
D.
6,900 g

Answer 1

One way to compare is to convert all measures to the same unit.
Let's convert every measure to grams.

Answer 2

7kg

Answer 3

The last one is already in grams, so we don't need to touch D.

Answer 4

A. \(7~ kg \times \dfrac{1000~g}{1~kg} = 7000~g\)

B. \(68.1 ~cg \times \dfrac{1~g}{100~cg} = 0.681~g\)

C. \(700 ~mg \times \dfrac{1~g}{1000~mg} = 0.7~g\)

D. \(6,900 g \)

Answer 5

Now that all measures are in grams, it's easy to compare.