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 | base 7 | decimal | base 7 |
|---|---|---|---|
| 1 | = 1 | 11 | = 14 |
| 2 | = 2 | 12 | = 15 |
| 3 | = 3 | 13 | = 16 |
| 4 | = 4 | 14 | = 20 |
| 5 | = 5 | 15 | = 21 |
| 6 | = 6 | 16 | = 22 |
| 7 | = 10 | 17 | = 23 |
| 8 | = 11 | 18 | = 24 |
| 9 | = 12 | 19 | = 25 |
| 10 | = 13 | 20 | = 26 |
| base 7 | decimal | base 7 | decimal |
|---|---|---|---|
| 1 | ≈ 1 | 14 | ≈ 11 |
| 2 | ≈ 2 | 15 | ≈ 12 |
| 3 | ≈ 3 | 16 | ≈ 13 |
| 4 | ≈ 4 | 20 | ≈ 14 |
| 5 | ≈ 5 | 21 | ≈ 15 |
| 6 | ≈ 6 | 22 | ≈ 16 |
| 10 | ≈ 7 | 23 | ≈ 17 |
| 11 | ≈ 8 | 24 | ≈ 18 |
| 12 | ≈ 9 | 25 | ≈ 19 |
| 13 | ≈ 10 | 26 | ≈ 20 |
| decimal | base 7 |
|---|---|
| 1 | = 1 |
| 2 | = 2 |
| 3 | = 3 |
| 4 | = 4 |
| 5 | = 5 |
| 6 | = 6 |
| 7 | = 10 |
| 8 | = 11 |
| 9 | = 12 |
| 10 | = 13 |