Finding Percentages

Front

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

Back

Percentage = (Part / Whole) × 100

Front

If a student scored 45 out of 60 on a test, what percentage did they score?

Back

75% (Calculation: (45/60) × 100 = 75%)

Front

What does it mean to find a percentage of a quantity?

Back

Finding a percentage of a quantity means determining how much of that quantity corresponds to a given percentage.

Front

How do you convert a fraction to a percentage?

Back

Multiply the fraction by 100 and add a percent sign. (e.g., 1/4 = 0.25 × 100 = 25%)

Front

What is 50% of 200?

Back

100 (Calculation: 50/100 × 200 = 100)

Front

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

Back

$30 (Calculation: 25% of $40 = $10; $40 - $10 = $30)

Front

What is the percentage increase if a price goes from $50 to $75?

Back

50% (Calculation: ((75-50)/50) × 100 = 50%)

Front

How do you find the percentage of a mixture?

Back

Percentage of a component = (Volume of component / Total volume) × 100

Front

If there are 200 students in a school and 80 are girls, what percentage are girls?

Back

40% (Calculation: (80/200) × 100 = 40%)

Front

What is the percentage of red apples if there are 30 red apples out of 100 apples?

Back

30% (Calculation: (30/100) × 100 = 30%)