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# How many significant figures are there in the measurement 238.230 kg?

Six .

The first things to look for here are **non-zero digits**, which as you know are **always** significant.

This measurement has a total of ##5## **non-zero digits**

##2,3,8,2,3##

so right from the start you know that it will have at least five significant figures.

Now focus on the trailing zero. Trailing zeros are zeros that follow a non-zero digit and are **not** followed by other non-zero digits.

When trailing zeros follow a non-zero digit **and** a decimal place, they are considered significant. This means that your measurement will contain ##6## **significant figures**

##238.230 ->## **five non-zero digits** and **one significant trailing zero**