Proportional Relationships and Percentages

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other quantity is constant.

Front

How do you calculate the percentage of a part compared to a whole?

Back

To calculate the percentage, divide the part by the whole and then multiply by 100. Formula: (Part/Whole) x 100 = Percentage.

Front

What is 90% of 250?

Back

90% of 250 is 225.

Front

If 70 out of 100 buttons are large, what percentage of the buttons are large?

Back

70% of the buttons are large.

Front

What is the formula to find the percent of a number?

Back

The formula is: Percent = (Part/Whole) x 100.

Front

If a meal costs $6.00 and a tip of $0.90 is given, what percent of the bill is the tip?

Back

The tip is 15% of the bill.

Front

How do you find the total number of items when given a percentage?

Back

To find the total, divide the part by the percentage (in decimal form). Total = Part / (Percentage/100).

Front

What is the percentage of strawberry cones sold if 15 out of 48 cones were strawberry?

Back

The percentage of strawberry cones sold is 31.25%.

Front

What does it mean if two quantities are in a proportional relationship?

Back

It means that as one quantity increases or decreases, the other quantity does so at a constant rate.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100.