decimal fractions | A fraction written as a decimal point and digits to the right of the decimal point |

decimal number | Decimal numbers are numbers whose place value is based on 10s, including whole numbers and decimal fractions, which have decimal points and digits to the right of the decimal point. The numbers 18, 4.12 and 0.008 are all decimal numbers. |

mixed number | An expression in which a whole number is combined with a proper fraction. For example 5 is a mixed number. |

place value | The value of a digit based on its position within a number. |