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Math & Reference guides

12 clear, plain-English guides — pick the thing you're trying to figure out.

› How to multiply fractions › How to divide fractions › How to factor › How to find the area of a triangle › How to calculate square feet › How to find slope › How to find an average › How to find the range › How to calculate a tip › How long it takes to walk a mile › How to calculate a percentage › How to convert a fraction to a decimal