Question

How do you round 1044.987 to 3 sig figs?
a) 1045
b) 1040
c) 1000
d) 1100

Answer 1

To round 1044.987 to 3 significant figures, round up the previous digit since the fourth decimal place is 9. The rounded answer is 1100.

Step-by-step explanation:

To round 1044.987 to 3 significant figures, we must look at the fourth decimal place. If the digit in the fourth decimal place is greater than or equal to 5, we round up the previous digit. If it is less than 5, we leave the previous digit as is. In this case, the digit in the fourth decimal place is a 9, so we round up the previous digit which is 8. Therefore, the rounded answer is 1100.