# finding the percentage of numbers

0
0

Curipod generated lesson: "finding the percentage of numbers". #1-4

1. Word cloud
120 seconds
What is the best way to work out a percentage of a number?
2. Slide
60 seconds
Percentages are used to compare a number to a whole. To calculate the percentage of a number, divide it by the whole and then multiply by 100. For example, if you have 10 out of 20, 10 divided by 20 is 0.5, then 0.5 × 100 is 50%
Finding the Percentage of Numbers
3. Slide
60 seconds
Percentage - a way to describe a part of a whole number using the symbol %. Rate - a way to compare two different kinds of numbers. Fraction - a way to show a part of a whole number by using two numbers separated by a slash (/) symbol.
Concepts:
4. Slide
60 seconds
Percentages were first used in ancient Babylonian and Egyptian mathematics, about 3,000 years ago. The symbol for percent (%) is derived from the Latin word per centum, meaning 'for every hundred'. The number 100 is the only three-digit number that is a perfect square and a perfect cube, which means it's the only number that is equal to its own square root and its own cube root.
Did you know?
5. Open question
180 seconds
Work together in pairs: What is the formula for finding the percentage of one number compared to another?
6. Personalised Feedback
360 seconds
If you have a pizza with 8 slices and you eat 3 slices, what percentage of the pizza did you eat?
7. Open question
180 seconds
Work together in pairs: What is the formula for finding the percentage of a number?
8. Drawings
450 seconds
Brain break: Draw a slice of pizza riding a flying bicycle while juggling tomatoes and sausages.
9. Poll
60 seconds
What is 25% of 80?
• 20
• 50
• 30
• 40
10. Poll
60 seconds
If you have 75 candies and you give away 25%, how many candies do you give away?
• 20
• 18.75
• 21
• 19
11. Poll
60 seconds
What is 60% of 150?
• 120
• 150
• 100
• 90
12. Poll
60 seconds
If a toy costs \$40 and it is on sale for 20% off, how much will it cost after the discount?
• \$32
• \$36
• \$44
• \$48
13. Poll
60 seconds
If you scored 80 out of 100 in a test, what percentage did you score?
• 90%
• 80%
• 95%
• 85%