Finding Percent Given Part and Whole

Front

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

Back

Percentage = (Part / Whole) × 100

Front

If there are 30 students in a class and 18 are girls, what percent are girls?

Back

60% (18/30 × 100 = 60%)

Front

What does the word 'of' usually indicate in percentage problems?

Back

It usually indicates multiplication.

Front

If a student answered 15 out of 20 questions correctly, what is their percentage score?

Back

75% (15/20 × 100 = 75%)

Front

How do you convert a fraction to a percentage?

Back

Multiply the fraction by 100.

Front

If 8 out of 40 students passed a test, what percent passed?

Back

20% (8/40 × 100 = 20%)

Front

What is 50% of 200?

Back

100 (0.5 × 200 = 100)

Front

If a recipe calls for 2 cups of sugar and you use 1 cup, what percent of the sugar did you use?

Back

50% (1/2 × 100 = 50%)

Front

What is the percentage of 25 out of 100?

Back

25% (25/100 × 100 = 25%)

Front

If a student got 5 questions wrong out of 30, what percentage did they get wrong?

Back

16.67% (5/30 × 100 = 16.67%)