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Physique
Secondaire 5 • 19 octobre 2025
If i had a question that asked me to rewrite the following quantities 205000000m and 0.0542s using only SI prefixes. And to not use scientific notations what would the answer be?

Explication (1)

Explication d’Alloprof
19 octobre 2025
Hello FunnyAntimony5289!
Thank you for your question! :)
First, you need to look at a chart of the International System of Units! Here’s one:
image.pngNext, ask yourself this question: In scientific notation, how could I rewrite my measurement?
For 205,000,000 m = 205 × 10⁶ m! And this value corresponds to mega!
So, we can write it as 205 Mm! :)
We do the same thing for the other measurements!
For 0.0542 s, we can rewrite it as 5.42 × 10⁻³!
So, it corresponds to milli!
The answer will therefore be 5.42 ms! :)
I hope I answered your question! Don’t hesitate to come back and see us if you have any other questions! :D
Have a great evening! :)