Fall 24/25

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What is a tip and how is it calculated?

Back

A tip is a small amount of money given to someone for their service, typically calculated as a percentage of the total bill. For example, a 20% tip on a $45 bill is calculated as 0.20 x 45 = $9.

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What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant. For example, if Table B shows that for every 2 apples, there are 4 oranges, the ratio is 2:4 or 1:2.

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How do you set up a ratio based on a recipe?

Back

To set up a ratio based on a recipe, identify the quantities of each ingredient and express them as a fraction. For example, in a recipe that calls for 2 cups of flour for every 3 cups of sugar, the ratio is 2:3.

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How do you find a percentage of a total?

Back

To find a percentage of a total, multiply the total by the percentage (expressed as a decimal). For example, to find 40% of 200 students, calculate 0.40 x 200 = 80.

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What does a scale on a blueprint represent?

Back

A scale on a blueprint represents the ratio of the drawing's dimensions to the actual dimensions. For example, a scale of 1 inch = 4 feet means that every inch on the blueprint represents 4 feet in reality.

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How do you convert a blueprint measurement to actual size?

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To convert a blueprint measurement to actual size, multiply the measurement by the scale factor. For example, if the kitchen is 6 inches on the blueprint and the scale is 1 inch = 4 feet, the actual size is 6 x 4 = 24 feet.

Front

What is the formula for calculating a tip?

Back

The formula for calculating a tip is: Tip = Total Bill x Tip Percentage. For example, for a $45 bill with a 20% tip, Tip = 45 x 0.20 = $9.

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How do you determine if a table represents a proportional relationship?

Back

To determine if a table represents a proportional relationship, check if the ratios of the corresponding values are equivalent. If they are, the relationship is proportional.

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What is the relationship between flour and sugar in a recipe?

Back

The relationship between flour and sugar in a recipe can be expressed as a ratio. For example, if 2 cups of flour are used for every 3 cups of sugar, the ratio is 2:3.

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How do you calculate the number of students who prefer a certain option based on a percentage?

Back

To calculate the number of students who prefer a certain option based on a percentage, multiply the total number of students by the percentage (as a decimal). For example, 40% of 200 students is 0.40 x 200 = 80.