The **decimal** numeral system (also called **base-ten** positional numeral system, and occasionally called **denary**) is the standard system for denoting integer and non-integer numbers. It has ten as its base.

decimal | quinary (base 5) | decimal | quinary (base 5) |
---|---|---|---|

1 | = 1 | 11 | = 21 |

2 | = 2 | 12 | = 22 |

3 | = 3 | 13 | = 23 |

4 | = 4 | 14 | = 24 |

5 | = 10 | 15 | = 30 |

6 | = 11 | 16 | = 31 |

7 | = 12 | 17 | = 32 |

8 | = 13 | 18 | = 33 |

9 | = 14 | 19 | = 34 |

10 | = 20 | 20 | = 40 |

**Quinary** (base-5 or pental) is a numeral system with five as the base. A possible origination of a quinary system is that there are five fingers on either hand.

quinary (base 5) | decimal | quinary (base 5) | decimal |
---|---|---|---|

1 | ≈ 1 | 21 | ≈ 11 |

2 | ≈ 2 | 22 | ≈ 12 |

3 | ≈ 3 | 23 | ≈ 13 |

4 | ≈ 4 | 24 | ≈ 14 |

10 | ≈ 5 | 30 | ≈ 15 |

11 | ≈ 6 | 31 | ≈ 16 |

12 | ≈ 7 | 32 | ≈ 17 |

13 | ≈ 8 | 33 | ≈ 18 |

14 | ≈ 9 | 34 | ≈ 19 |

20 | ≈ 10 | 40 | ≈ 20 |

decimal | quinary (base 5) |
---|---|

1 | = 1 |

2 | = 2 |

3 | = 3 |

4 | = 4 |

5 | = 10 |

6 | = 11 |

7 | = 12 |

8 | = 13 |

9 | = 14 |

10 | = 20 |