A fraction where the denominator (the bottom number) is a power of ten (such as 10, 100, 1000, etc).

You can write decimal fractions with a decimal point (and no denominator), which make it easier to do calculations like addition and multiplication on fractions.

Examples:

7/10 is a decimal fraction and it can be shown as 0.7

43/100 is a decimal fraction and it can be shown as 0.43

51/1000 is a decimal fraction and it can be shown as 0.051

You can write decimal fractions with a decimal point (and no denominator), which make it easier to do calculations like addition and multiplication on fractions.

Examples:

7/10 is a decimal fraction and it can be shown as 0.7

43/100 is a decimal fraction and it can be shown as 0.43

51/1000 is a decimal fraction and it can be shown as 0.051