Percent Proportion and Percent Change

Percent Proportion and Percent Change

Assessment

Flashcard

Mathematics

7th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is percent proportion?

Back

Percent proportion is a way to express a ratio as a fraction of 100. It is often used to compare a part to a whole.

2.

FLASHCARD QUESTION

Front

How do you calculate the percent of a number?

Back

To calculate the percent of a number, multiply the number by the percent (as a decimal). For example, 30% of 80 is calculated as 0.30 * 80 = 24.

3.

FLASHCARD QUESTION

Front

What is the formula for percent change?

Back

The formula for percent change is: ((New Value - Old Value) / Old Value) * 100.

4.

FLASHCARD QUESTION

Front

If a car's price decreases from $20,000 to $15,000, what is the percent decrease?

Back

Percent decrease = ((20,000 - 15,000) / 20,000) * 100 = 25%.

5.

FLASHCARD QUESTION

Front

What does a percent increase indicate?

Back

A percent increase indicates how much a value has grown compared to its original amount, expressed as a percentage.

6.

FLASHCARD QUESTION

Front

What is the percent of change when a quantity increases from 50 to 75?

Back

Percent change = ((75 - 50) / 50) * 100 = 50%.

7.

FLASHCARD QUESTION

Front

How do you find the original price if you know the sale price and the percent decrease?

Back

Use the formula: Original Price = Sale Price / (1 - Percent Decrease). For example, if the sale price is $52.40 and the percent decrease is 20%, the original price is $52.40 / (1 - 0.20) = $65.50.

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