The prefix milli- means one thousandth, or 10–3. how many milliseconds (ms) are in 6.7 seconds? 6.7 × 10–3 ms 2.0 × 104 ms 6.7 × 102 ms 6.7 × 103 ms

You know that the prefix mili means one thousandth or 1/100.

Numerically speaking, one thousandth is equals to 10 to the power of negative 3.

Solving seconds to milliseconds:

6.7 seconds x 1000 milliseconds / 1 second

Cancelling out the unit seconds. Then multiplying 6.7 to 1000 milliseconds.

The answer is 6,700 milliseconds or 6.7 x 10^3 ms