Question

5.5x10² – 6.50x10'
Express the calculation in correct significant digits

Answer 1

`6.15x10^2`

Step-by-step explanation:

Hello!

In this case, when performing mathematical operations with numbers in scientific notation, the first step is to write them in standard notation:

550 - 65.0

Thus, the result without any significant figures-based analysis is:

615.0

However, since 550 is significant to the ones and 65.0 to the tenths, we need to round the result to the bigger significance, in this case to the ones; therefore the appropriate result would be:

615

That in scientific notation would be:

`6.15x10^2`

Best regards!