Percent Problems

Front

What is the formula to calculate the percentage of a part compared to a whole?

Back

Percentage = (Part / Whole) * 100

Front

If 12 out of 30 cars finished a race, how do you calculate the percentage of cars that finished?

Back

Percentage of cars finished = (12 / 30) * 100 = 40%.

Front

How do you calculate the discounted price of an item given a percentage discount?

Back

Discounted Price = Original Price - (Original Price * Discount Percentage)

Front

What is 30% of $89?

Back

30% of $89 = $89 * 0.30 = $26.70.

Front

If 75% of students in a class are taller than 5 feet, how do you find the number of students taller than 5 feet?

Back

Number of students taller than 5 feet = Total Students * 0.75.

Front

How do you find the number of items that are not a certain percentage of the total?

Back

Number of items not in the percentage = Total Items - (Total Items * Percentage).

Front

If 16% of cars in a parking lot are blue and there are 4 blue cars, how do you find the total number of cars?

Back

Total Cars = Number of Blue Cars / Percentage of Blue Cars = 4 / 0.16 = 25.

Front

What is the relationship between percentage and fractions?

Back

Percentage is a way of expressing a number as a fraction of 100.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide by 100 (e.g., 70% = 0.70).

Front

If 70% of 20 students have siblings, how do you calculate the number of students with siblings?

Back

Number of students with siblings = Total Students * 0.70.