Exercise 18 Page 347

We want to round the given decimal number and write the result as the product of a single digit and a power of 10. 0.00000124Let's start by rounding the given number to the nearest 0.00000 1. Since the digit in the ten-millionths place is less than 5, we will not modify the digit in the millions place. 0.00000 1 24≈ 0.00000 1 Finally, we will write the above number as the product of a single digit and a power of 10.