Podcast
Questions and Answers
What is the percentage increase of 240 from 200?
What is the percentage increase of 240 from 200?
What is 1/5 of 345?
What is 1/5 of 345?
What is the equivalent fraction of 2/5 in thirds?
What is the equivalent fraction of 2/5 in thirds?
What is the sum of 247, 189, and 216?
What is the sum of 247, 189, and 216?
Signup and view all the answers
What percentage decrease is 180 from 240?
What percentage decrease is 180 from 240?
Signup and view all the answers
What percentage of 360 is 90?
What percentage of 360 is 90?
Signup and view all the answers
A bookstore has 420 books, and 30 more are added. What is the percentage increase?
A bookstore has 420 books, and 30 more are added. What is the percentage increase?
Signup and view all the answers
What is 3/4 of 288?
What is 3/4 of 288?
Signup and view all the answers
What is the equivalent fraction of 3/4 in sixths?
What is the equivalent fraction of 3/4 in sixths?
Signup and view all the answers
What is 0.45 as a percentage?
What is 0.45 as a percentage?
Signup and view all the answers
Study Notes
Percentages of 3-Digit Numbers
- To find a percentage of a 3-digit number, multiply the number by the percentage (as a decimal)
- For example, 25% of 240 = 240 × 0.25 = 60
Percentage Increase and Decrease
- To find the percentage increase, first find the difference between the two values, then divide by the original value and multiply by 100
- For example, if a value increases from 150 to 180, the percentage increase is ((180 - 150)/150) × 100 = 20%
- To find the percentage decrease, follow the same steps, but subtract the difference from 100 to get the percentage decrease
Fractions of 3-Digit Numbers
- To find a fraction of a 3-digit number, multiply the number by the numerator (top number) and divide by the denominator (bottom number)
- For example, 1/4 of 240 = (1/4) × 240 = 60
Equivalent Fractions
- Equivalent fractions have the same value, but different numerators and denominators
- To find an equivalent fraction, multiply or divide both the numerator and denominator by the same number
- For example, 1/2 is equivalent to 2/4, as both have the same value (halve of the whole)
Converting Decimals to Percentages
- To convert a decimal to a percentage, multiply by 100
- For example, 0.25 as a percentage is 0.25 × 100 = 25%
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your math skills with this quiz on finding percentage increases and decreases of 3-digit numbers, fractions of 3-digit numbers, equivalent fractions, and adding three 3-digit numbers together.
