Decimals are another way of writing fractions with what kind of denominator?

1. A decimal number is built from place values that are each ten times the one to its right, just like whole numbers. 2. This means every decimal place corresponds to a fraction with a denominator that is a power of ten, such as 10, 100, or 1,000. 3. Decimals are another way of writing fractions whose denominators are powers of ten. 4. The denominator is not always exactly 100, and it is never a prime or odd number in general, since powers of ten are never odd or prime beyond the trivial case. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 5 "Decimals", section 5.1 Decimals_