Quick answer: Add the value of all valid darts in the turn, applying double and triple multipliers before subtracting from an X01 total.
Calculate each dart before adding
Identify the wedge value first. A point in either broad bed uses face value, the outer narrow ring doubles it and the middle narrow ring triples it. Write or say the evaluated values individually: triple 17 becomes 51, double 12 becomes 24, and single 6 remains 6.
Add only after applying those multipliers. The example turn equals 81, not a multiple of the three printed numbers combined. Outer bull is 25, inner bull 50 and a point outside the scoring area is zero.
Subtract a normal X01 turn
Record the score at the start of the visit. If a player begins on 284 and scores 81, subtract to leave 203. The next player throws only after the turn has been announced and the darts removed according to the game’s procedure.
Check the arithmetic before pulling close darts because removal prevents a disputed segment from being inspected. Manual scoreboards often show both the scored turn and new remaining total, which makes corrections easier.
Handle busts as a complete-turn reset
Suppose a player starts on 32, hits single 16, then single 17. The second dart makes the running total exceed the required finish, so the visit busts. The score returns to 32; it does not become 16, and any remaining dart is not thrown.
Leaving one also busts in double-out because no legal double can score one. Reaching zero with a single or triple rather than the required final double likewise restores the score from the beginning of the visit.
Convert hits into Cricket marks
For 20 through 15 and bull, a single equals one mark, a double two and a triple three. Three cumulative marks close the target. If triple 20 is the first hit on 20, it closes the number immediately without necessarily adding 60 points.
Extra marks score only when the player has closed the target and an opponent has not. A player with two marks on 18 who hits triple 18 uses one mark to close and scores the two extras for 36 points, assuming the opponent still has 18 open.
Use a scoreboard that exposes arithmetic
For manual X01, write the visit score beside the previous remainder before recording the new total. If a player starts on 267 and hits 85, the line shows both 85 and 182. This creates an audit trail when the next visit reveals a mistake. Cross out corrections cleanly instead of overwriting digits that could later be misread.
Near a finish, calculate after each dart. From 62, single 12 leaves 50 and the inner bull can finish; single 20 leaves 42 and double 11 can finish. Knowing the live remainder prevents a player from throwing at a segment that creates a bogey number or accidental bust. Arithmetic therefore supports route choice, not just recordkeeping after the visit.
A calculator or scoring app can verify totals, but players benefit from practicing common subtractions and doubles. Memorizing complements to 60, 100 and favorite finishes reduces pauses at the line. Enter digital corrections immediately so the next player never begins from an incorrect remainder.
Turn the answer into a better game
Use the relevant tool or playing guide next instead of leaving the answer on the screen. You can play the Road to the Crown darts game, measure a lane with the setup calculator, or return to our dart boards homepage to compare board types and plan a complete setup.
Frequently asked questions
Do you add or subtract dart scores?
First add the darts in a turn. In 301 and 501, subtract that turn total from the player’s remaining score unless the visit busts.
If my third dart busts, do the first two still count?
No. Under standard X01 bust rules, the entire visit is cancelled and the score returns to its value before the first dart.
Is triple bull worth 150?
There is no triple-bull ring on a standard board. The outer bull scores 25 and the inner bull scores 50.
The Throw Lab verdict
Score the physical board first: face value for singles, twice the wedge for doubles, three times for triples, plus 25 or 50 for the bulls. Add the valid darts, then apply the game rules. X01 subtracts but may restore the full starting score after a bust; Cricket converts target hits into marks and conditional points. Keeping evaluation, addition and rule application as three separate steps makes even crowded turns easier to calculate correctly. A visible audit trail on the scoreboard also makes disputes and corrections far simpler.