Question

Round 78,110 to the nearest hundred in scientific notation

Answer 1

To round the number 78,110 to the nearest hundred in scientific notation, we need to determine the first significant digit. Since 78,110 is a five-digit number, the first significant digit is 7.

To see if we need to round up or down, we look at the digit following the first significant digit, which is 8 in this case. Since 8 is greater than or equal to 5, we round up the first significant digit to the next higher number.

Therefore, 78,110 rounded to the nearest hundred in scientific notation is written as 7.81 x 10^4.