Podcast
Questions and Answers
Percentages are fractions out of what number?
Percentages are fractions out of what number?
- 1
- 100 (correct)
- 1,000
- 10
What is $\frac{8}{10}$ as a percentage?
What is $\frac{8}{10}$ as a percentage?
- 8%
- 0.8%
- 80% (correct)
- 800%
A birdcage contains 8 canaries and 13 parakeets. What percentage of the birds are canaries, rounded to the nearest whole number?
A birdcage contains 8 canaries and 13 parakeets. What percentage of the birds are canaries, rounded to the nearest whole number?
- 38% (correct)
- 62%
- 58%
- 8%
Jake bought a mobile phone at 25% off the original price of $380. How much did Jake pay?
Jake bought a mobile phone at 25% off the original price of $380. How much did Jake pay?
Percentages are fractions with a denominator of what number?
Percentages are fractions with a denominator of what number?
To convert a fraction to a percentage, you multiply by what number?
To convert a fraction to a percentage, you multiply by what number?
What does the word 'of' typically mean in mathematics when finding a percentage of a quantity?
What does the word 'of' typically mean in mathematics when finding a percentage of a quantity?
To convert a percentage to a decimal, you should perform what operation?
To convert a percentage to a decimal, you should perform what operation?
What is 37% expressed as a simplified fraction?
What is 37% expressed as a simplified fraction?
Express $\frac{36}{90}$ as a percentage.
Express $\frac{36}{90}$ as a percentage.
In a class of 25 students, there are 18 girls. What percentage of the class are girls?
In a class of 25 students, there are 18 girls. What percentage of the class are girls?
To increase a value by a percentage, you add the percentage increase to what number?
To increase a value by a percentage, you add the percentage increase to what number?
To convert a decimal to a percentage, you should perform what operation?
To convert a decimal to a percentage, you should perform what operation?
If the original price of an item is $95, what would the sale price be if there is a discount of 15%?
If the original price of an item is $95, what would the sale price be if there is a discount of 15%?
What is 32% of 45?
What is 32% of 45?
To decrease a value by a percentage, you should multiply the value by 100% minus the percentage decrease. True or false?
To decrease a value by a percentage, you should multiply the value by 100% minus the percentage decrease. True or false?
What percentage of 2 hours is 20 minutes?
What percentage of 2 hours is 20 minutes?
Flashcards
What are Percentages?
What are Percentages?
Fractions based on 100, commonly used in daily life
Converting to a Percentage
Converting to a Percentage
Multiply by 100 to convert fraction/decimal to a percentage
Meaning of 'of' in Mathematics
Meaning of 'of' in Mathematics
The word 'of' in math often indicates multiplication.
Calculating Percentage Increase
Calculating Percentage Increase
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Calculating Percentage Decrease
Calculating Percentage Decrease
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Study Notes
- Percentages are fractions out of 100, used in everyday life.
- Percentages are fractions with a denominator of 100.
Converting fractions to percentages
- To convert a fraction or decimal to a percentage, multiply by 100.
- To convert a percentage to a decimal or fraction, divide by 100.
Finding a percentage of a quantity
- The word "of" in mathematics means multiply.
Expressing a quantity as a percentage of another
- Write the first amount as a fraction over the second when expressing a quantity as a percentage of another.
- When units are not the same, convert them before calculating the percentage.
Percentage change
- Percentage change involves either increasing or decreasing a quantity as a percentage of the original amount.
- Percentage Increase Calculation:
- Add the percentage increase to 100%.
- Multiply the result by the original amount.
- Percentage Decrease Calculation:
- Subtract the percentage decrease from 100%.
- Multiply the result by the original amount.
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