Question

Round 234,555,359 to 3 significant figures.

Answer 1

To round 234,555,359 to 3 significant figures, we round the third significant figure (4) based on the digit to its right (5).

Step-by-step explanation:

To round a number to a specific number of significant figures, determine the digit that is one place to the right of the desired significant figure.

If this digit is 5 or greater, increase the desired significant figure by 1. If it is less than 5, leave the desired significant figure unchanged.

In the case of 234,555,359, the third significant figure is 4. The digit to its right is 5, so we increase the third significant figure by 1, resulting in 234,555,000.

Answer 2

To round 234,555,359 to 3 significant figures, we focus on the first three non-zero digits. The number rounds up to 235,000,000 because the fourth digit is 5 or higher.

Step-by-step explanation:

To round 234,555,359 to 3 significant figures, we must identify the first three non-zero digits. In this case, those digits are 2, 3, and 4. We look to the digit immediately after the third significant figure, which is 5, to decide how to round. According to rounding rules, since 5 is equal to or greater than 5, we round up the third digit. Therefore, our number becomes 235,000,000.