Questions: 42,561

Solution Steps

To round a number to a specific number of significant figures, we need to identify the first four non-zero digits and round the number accordingly. In this case, we will round the number 42,561 to four significant figures.

To round the number 42,561 to four significant figures, we first identify the first four non-zero digits. The number 42,561 has the digits 4, 2, 5, and 6 as its first four significant figures.

The fourth significant figure is the digit 6, which is in the hundreds place. Therefore, we need to round the number to the nearest hundred.

To round 42,561 to the nearest hundred, we look at the digit in the tens place, which is 1. Since 1 is less than 5, we round down, keeping the hundreds digit as it is.

Final Answer