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Question 1: What does the word 'percent' literally mean?
- Per hundred
- Per ten
- Per unit
- Per thousand
Answer: A. Per hundred
Explanation: The term 'percent' is derived from Latin and translates to 'per hundred', which is why percentages are always compared to a base of 100.
Question 2: Which symbol is used to represent a percentage?
- @
- %
- &
- #
Answer: B. %
Explanation: The term percent is derived from the Latin phrase per centum, which literally translates to mean by the hundred or for every hundred.
Question 3: What fraction is equivalent to 50%?
- 1/2
- 1/5
- 1/10
- 1/4
Answer: A. 1/2
Explanation: Fifty percent represents exactly one-half of a whole value, which is equivalent to the fraction 1/2 when expressed in its simplest form.
Question 4: To convert a decimal to a percentage, what should you do?
- Multiply by 10
- Divide by 100
- Divide by 10
- Multiply by 100
Answer: D. Multiply by 100
Explanation: To convert a decimal like 0.75 into a percentage, you multiply the number by 100, which moves the decimal point two places to the right.
Question 5: What is 10% of a number equivalent to?
- Dividing by 100
- Multiplying by 100
- Dividing by 10
- Multiplying by 10
Answer: C. Dividing by 10
Explanation: The number 100 percent represents a complete whole, meaning that all parts of the total value are included in the final calculation.
Question 6: Which value represents one whole in percentage form?
- 100%
- 1%
- 50%
- 10%
Answer: A. 100%
Explanation: To find 10 percent of any number, you can simply move the decimal point one place to the left or divide the total by ten.
Question 7: What is the fraction equivalent of 25%?
- 1/5
- 1/2
- 1/3
- 1/4
Answer: D. 1/4
Explanation: Twenty-five percent is equal to 25/100, which simplifies to the fraction 1/4, representing exactly one-fourth of a total value or a single quarter.
Question 8: What is the formula for calculating percent increase?
- (Original - New) / Original * 100%
- (New - Original) / Original * 100%
- (New * Original) / 100%
- (New + Original) / Original * 100%
Answer: B. (New - Original) / Original * 100%
Explanation: When you express a percentage as a decimal, you divide the percentage value by 100, which effectively moves the decimal point two places left.
Question 9: Which of these is a common application of percentages in Grade 7 math?
- Measuring angles
- Solving for square roots
- Graphing linear functions
- Calculating simple interest
Answer: D. Calculating simple interest
Explanation: A percentage represents a ratio or a fraction where the denominator is always fixed at 100, allowing for easy comparison between different numerical values.
Question 10: If you have a 20% discount, what are you calculating?
- Percent increase
- Percent decrease
- A whole value
- Simple interest
Answer: B. Percent decrease
Explanation: To calculate 200 percent of a number, you multiply that number by two, because 200 percent is equivalent to the whole number two.