Percents & Proportional Reasoning

Front

What is a proportional relationship?

Back

A proportional relationship is one in which two quantities maintain a constant ratio. If one quantity increases, the other increases at the same rate.

Front

Back

Proportional

Front

If a family sells a car for 60% less than they paid ($9,000), what is the selling price?

Back

$3,600

Front

Is the relationship of Ross's yard mowing charges proportional or non-proportional?

Back

Non-Proportional

Front

What is 30% of what number equals 12.5?

Back

41.67

Front

Back

Not Proportional

Front

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

Back

Percentage = (Part/Whole) x 100

Front

How do you convert a fraction to a percent?

Back

Multiply the fraction by 100 and add a percent sign.

Front

What is the relationship between ratios and proportions?

Back

Ratios compare two quantities, while proportions state that two ratios are equal.

Front

If a shirt costs $40 and is on sale for 25% off, what is the sale price?

Back

$30