Topic 3 Mid-Topic Review

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you calculate a percentage of a number?

Back

To calculate a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 20% of 60, calculate 60 * 0.20 = 12.

Front

What is the formula to find the total after a percentage increase?

Back

The formula is: Total = Original Price + (Original Price * Percentage Increase).

Front

How do you find the original price before a percentage increase?

Back

To find the original price, use the formula: Original Price = Total Price / (1 + Percentage Increase).

Front

What does it mean when we say 'percent is the constant'?

Back

In a proportional relationship, the percent represents a fixed ratio that relates the part to the whole.

Front

If a car can travel 120 miles on a full tank and uses 30% of the tank, how far does it travel?

Back

The car travels 36 miles. (120 miles * 0.30 = 36 miles).

Front

What is the equation to find the new price after a discount?

Back

New Price = Original Price - (Original Price * Discount Percentage).

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100. For example, 25% becomes 0.25.

Front

What is the relationship between fractions and percentages?

Back

A percentage is a fraction with a denominator of 100. For example, 25% is equivalent to the fraction 25/100.

Front

How do you calculate the total cost after applying a discount and adding tax?

Back

Total Cost = (Original Price - Discount) + Tax.