# How do you put 1.349582 into 3 significant figures?

Sep 2, 2016

Round to 1.35. Non-zero digits are always significant. Refer to the rules for rounding significant figures in the explanation.

#### Explanation:

If the first number to be dropped is 4 or less, round down.
$6.764 = 6.76$ rounded to three significant figures.

If the first number to be dropped is 6 or greater, round up.
$6.767 = 6.77$ rounded to three significant figures.

If the first number to be dropped is 5, round so that the result will end with an even number.
$6.765 = 6.76$