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# Restaurant Math

### Terms you need to know to dine at a restaurant.

TermDefinition
fractions Part of a whole. • the bottom number (the denominator) says how many parts the whole is divided into • the top number (the numerator) says how many parts we have
numerator The top number in a fraction. Shows how many parts we have.
denominator The bottom number in a fraction. Shows how many equal parts the item is divided into.
equivalent Having the same value. For example 1/2 = 0.5 or 50%.
decimal A number that uses a decimal point followed by digits that show a value smaller than one.
sales tax The percent of a sales total that the government collects.
gratuity The percent of a sales total given as a tip. A fair tip is 20% of the total bill.
tenths One part in ten equal parts. In expanded form it is (1 x 0.1)
hundredths One part in one hundred equal parts. In expanded form it is (1 x 0.01)
percent A special way to write fractions or decimals that are parts per 100.
calculate percent tax, percent off, or percent gratuity Turn the fraction or percent into a decimal and multiply by the total. Add the result to the total bill.
Created by: MathSamurai678