**As a decimal, 15 percent is 0.15.** To find this answer, use the definition of percent given as part (P) per hundred to express it as the fraction P/100.

To find this fraction as a decimal, divide the numerator P by the denominator 100. For 15 percent, this is rewritten as 15/100 and expressed as 0.15.

In math, students can express decimal numbers by place values. In this positional system, a digit’s position before or after the decimal point determines its place value. The second place value to the right of the decimal point is the hundredth position. Students can also write this decimal in word form as fifteen-hundredths.