Topic 3 Review

Front

What is the formula to calculate the height of a vertical jump as a percentage of a person's height?

Back

Height of jump = (Percentage of height) * (Actual height) / 100

Front

If Dagne can jump 97.5 inches and this is 195% of her height, how do you find her height?

Back

Height = Jump height / (Percentage of height / 100) = 97.5 / 1.95 = 50 inches.

Front

What is percent error and how is it calculated?

Back

Percent error = |(Estimated value - Actual value)| / |Actual value| * 100%.

Front

If Jocelyn estimates a wood piece at 7.2 cm and it actually measures 6.5 cm, what is the percent error?

Back

Percent error = |(7.2 - 6.5)| / |6.5| * 100% = 10.77%.

Front

What does a discount of 40% mean in terms of price reduction?

Back

A discount of 40% means the price is reduced by 40% of the original price.

Front

How do you calculate the sale price after a discount?

Back

Sale price = Original price - (Discount percentage * Original price).

Front

If a video game costs $36.80 and is 40% off, how much do you pay?

Back

Sale price = $36.80 - (0.40 * $36.80) = $22.08.

Front

What is the relationship between percentages and fractions?

Back

A percentage can be converted to a fraction by dividing by 100.

Front

What fraction is equivalent to 77.7%?

Back

Front

How do you find the total cost when additional items are added to a purchase?

Back

Total cost = Original cost + Cost of additional items.