Sorry

This answer is incorrect.

The question is really asking which of the numbers is the largest (further right on the number line). The easiest way to determine this is to add as many zeros to the right so that all the numbers have the same digits. Then drop all the leading zeros. Now you should more easily be able to determine which number is the largest.

You will notice that with the numbers

• 0.001
• 0.0015
• 0.00099
• 0.0005

that the longest number has 5 digits to the right of the decimal point.

• ---

• First add zeroes to the right of each number so that there are 5 digits in each of the numbers:
  • 0.00100
  • 0.00150
  • 0.00099
  • 0.00050
• Second drop all the leading zeroes.
  • 100
  • 150
  • 99
  • 50
• Now you can see that 150 is the largest number and is the correct answer.

Now let us try another one.

On a number line, which of these numbers would be the farthest to the left?

• 0.001
• 0.0003
• 0.045
• 0.0009

Web Related: David.Mazza@grc.nasa.gov
Technology Related: Thomas.J.Benson@grc.nasa.gov
Responsible NASA Official: Theresa M. Scott (Acting)