Math 7 Retake PWCS Unit 5

Front

What is the formula to calculate the percentage of a number?

Back

Percentage = (Part / Whole) × 100

Front

If 3 oz of red paint is mixed with 5 oz of yellow paint, what is the ratio of red to yellow paint?

Back

The ratio is 3:5.

Front

How do you find the equivalent ratio of a given ratio?

Back

To find an equivalent ratio, multiply or divide both terms of the ratio by the same non-zero number.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first term is the numerator and the second term is the denominator.

Front

If 14 sticks of pepperoni are needed for 28 pizzas, how many sticks are needed for 1 pizza?

Back

1 stick of pepperoni is needed for 2 pizzas.

Front

What is the unit rate of sticks of pepperoni per pizza in the previous question?

Back

The unit rate is 0.5 sticks of pepperoni per pizza.

Front

How do you set up a proportion to solve for an unknown?

Back

Set up a proportion by creating a fraction for each ratio and cross-multiply to solve for the unknown.

Front

What is the concept of scaling in ratios?

Back

Scaling involves multiplying or dividing both terms of a ratio by the same number to create an equivalent ratio.

Front

If the ratio of paint thinner to color is 2 to 6, what is the simplified ratio?

Back

The simplified ratio is 1:3.

Front

What is a real-world example of using ratios?

Back

Mixing ingredients in a recipe, such as 2 cups of flour to 1 cup of sugar.