Editing Yagura:SRD:Basics (section)

===Multiplying===

Sometimes a rule makes you multiply a number or a die roll. As long as you’re applying a single multiplier, multiply the number normally. When two or more multipliers apply to any abstract value (such as a modifier or a die roll), however, combine them into a single multiple, with each extra multiple adding 1 less than its value to the first multiple. Thus, a double (×2) and a double (×2) applied to the same number results in a triple (×3, because 2 + 1=3).

When applying multipliers to real-world values (such as weight or distance), normal rules of math apply instead. A [[Yagura:SRD:Creatures|creature]] whose [[Yagura:SRD:Size|size]] doubles (thus multiplying its weight by 8) and then is [[Yagura:SRD:Petrified|turned to stone]] (which would multiply its weight by a factor of roughly 3) now weighs about 24 times normal, not 10 times normal. Similarly, a [[Yagura:SRD:Blinded|blinded]] creature attempting to negotiate [[Yagura:SRD:Difficult Terrain|difficult terrain]] would count each square as 4 squares (doubling the cost twice, for a total multiplier of ×4), rather than as 3 squares (adding 100% twice).

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