Question

Three hundred centimeters is the same as

3 kilometers

3 meters

3 millimeters

3 decimeters

Answer 1

The prefix, centi, is always \(10^{-3}\).
In other words: \(1 cm = 10^{-3} m\) or \(1 = 10^{-3} \frac{m}{cm}\)

300 can be written as \(3 \times 10^{3}\).
So lets multiply 300 with 1 as we got above:
\(\Large 10^{3} cm \times 10^{-3} \frac{m}{cm} = 10^{3-3} \frac{m \times cm}{cm}=3m \)
See the idea?

Answer 2

thanx

Answer 3

Sorry I write wrong all the time.
\[\large 3 \times 10^{3} cm \times 10^{-3} \frac{m}{cm} = 3 \times 10^{3-3} \frac{m \times cm}{cm}=3m\]
Remember that \(10^{0}=1\)

Answer 4

ok thanx

Answer 5

Kein Problem.