Module 10: Background You’ll Need 5

  • Compare and order decimals.
Percent means “out of one hundred.” Percentages may be written as fractions or as decimals. Depending upon the use, one form may be preferred over the other, but they are equivalent.mTo convert a percentage into a probability, you divide the percentage by [latex]100[/latex], which is the same as moving the decimal point two places to the left.

The number 123.4567 is in green, with the base of 10 each number is in the position of listed in black.

To compare decimals that are between [latex]0[/latex] and [latex]1[/latex], always start in the tenths place. The decimal with the larger value in the tenths place is bigger. If they are the same, move on to the hundredths place and compare. If these values are the same, keep moving to the right and repeat the process until you find one that is bigger or you find out the decimals are equal.