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A strike is worth 10 points plus the number of pins knocked down by the player during their next two tries. If players do not score a strike but knock down all remaining on their second try, the frame is scored as a spare. A spare is worth 10 points plus the number of pins knocked down on the next try.
Your bowling lane should have a series of dots 7 feet (2.1 m) down the lane, and black arrows about fifteen feet down the lane. If you're a beginning bowler, you should aim to roll the ball in the center of these marks. Once you develop your bowling skills, you can aim to the left or the right of the marks when you hook the ball. Even if you aim your ball through the center of the marks, you may not be able to hit the pins because the ball can slow down or roll off toward the gutters.