Re: Math Problem?
hotwaterwizard,
Perhaps its the "shifting" that needs some clarification. Grab a piece of quadrille papaer. Use 7 of the squares. Label the squares, from left to right, 1,2,3,4,5,6,7.
Write the first 3 digits in squares 5,6,7. Multiply the number by 10,000. The 3 digit number now appears in squares 1,2,3. Squares 4,5,6,7 now contain zeros. In the problem, the 3 digit number is multiplied by 20,000 in 2 steps: multiply by 80, and then multiply by 250. So the result in squares 1,2,3 is twice the value of the 1st 3 digits. This value gets divided by 2 in the last step, resulting in the original 3 digt number in squares 1,2,3.
Regards,
Kral