| Decimals | Rounded |
|---|---|
| 0 | 3 |
| 1 | 3.1 |
| 2 | 3.14 |
| 3 | 3.142 |
| 4 | 3.1416 |
| 5 | 3.14159 |
| 6 | 3.141593 |
Half-up is the rule you learned in school. Banker's rounding (round-half-to-even) is the default in IEEE-754 and most financial software because it eliminates the upward bias of always rounding .5 up.
Rounding to a 'nearest unit' is useful for prices (nearest 0.05), salaries (nearest 1000) and grid snapping (nearest 5 px).
Half-up is the rule you learned in school. Banker's rounding (round-half-to-even) is the default in IEEE-754 and most financial software because it eliminates the upward bias of always rounding .5 up.
Rounding to a 'nearest unit' is useful for prices (nearest 0.05), salaries (nearest 1000) and grid snapping (nearest 5 px).
| Decimals | Rounded |
|---|---|
| 0 | 3 |
| 1 | 3.1 |
| 2 | 3.14 |
| 3 | 3.142 |
| 4 | 3.1416 |
| 5 | 3.14159 |
| 6 | 3.141593 |