Question
A giraffe weighs 1668 kg. What is the weight of the giraffe to 2 significant figures?
Answer
4.2
(282 Votes)
Lexi
Elite · Tutor for 8 years
Answer
1700
Explanation
To round a number to a certain number of significant figures, you start counting digits from the first non-zero digit and round off as necessary when you hit your target digit count. Here, we are asked to round 1668 to two significant figures. The first two digits are '16', so that's where we start. The third digit is 6, and because it is 5 or greater (which requires us to round up), the second digit (6) should be rounded up by one to 7. Thus, 1668, to two significant figures, is 1700.