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Suppose we

**have**the**number**0.004562 and want 2**significant figures**. The trailing zeros are placeholders, so we do not count them. Next we round 4562 to 2 digits, leaving us with 0.0046 .

Keeping this in consideration, how many significant figures does 10.0 have?

two significant digits

**100**with three

**significant figures**(implying an uncertainty of ), you could write it as

**100**. (with a trailing decimal point) or, less subtly, as , or (even better) with an explicit uncertainty such as or “

**100**to three

**significant figures**”.

Also to know, how many significant figures are in each number?

Counting **Significant Figures** There are 6 **significant digits**. The zeros are all between **significant digits**. There are 8 **significant digits**. In this case the trailing zeros are to the right of the decimal point.

four