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Question 1: The word 'percent' comes from the Latin phrase 'per centum,' which means what?
- By a hundred
- By a thousand
- By a decimal
- By a fraction
Answer: A. By a hundred
Explanation: The term 'percent' is derived from the Latin phrase 'per centum,' which translates directly to 'by a hundred' or 'per hundred,' forming the foundation for how we use percentages today.
Question 2: What does 1% represent in terms of a whole?
- 1 out of 100
- 1 out of 10
- 1 out of 1000
- 10 out of 100
Answer: A. 1 out of 100
Explanation: By definition, 1% represents exactly 1 out of 100 parts of a whole. This is the basic unit used to express parts of whole numbers in percentage math.
Question 3: Which decimal is equivalent to 25%?
- 2.5
- 0.25
- 0.2
- 0.025
Answer: B. 0.25
Explanation: Since 25% means 25 out of 100, it is written as the fraction 25/100. When you divide 25 by 100, you get the decimal value of 0.25.
Question 4: If you score 90% on a test, how many points did you get out of 100?
- 9 points
- 10 points
- 90 points
- 100 points
Answer: C. 90 points
Explanation: A percentage score of 90% means that for every 100 points possible, you earned 90 of them. This is a common way to compare and express parts of a whole.
Question 5: What fraction is equivalent to 50%?
- 1/2
- 1/10
- 1/5
- 1/4
Answer: A. 1/2
Explanation: 50% represents 50 out of 100. When you simplify the fraction 50/100 by dividing both the numerator and the denominator by 50, you get the simplified fraction of 1/2.
Question 6: Which decimal is equivalent to 90%?
- 0.09
- 0.9
- 0.99
- 9.0
Answer: B. 0.9
Explanation: 90% is the same as 90 out of 100. When expressed as a decimal, 90 divided by 100 equals 0.9, which represents nine-tenths of the total whole number.
Question 7: What fraction is equivalent to 60%?
- 2/5
- 6/100
- 1/6
- 3/5
Answer: D. 3/5
Explanation: 60% is 60 out of 100, or 60/100. Dividing both numbers by their greatest common divisor, 20, simplifies the fraction to 3/5, which is the standard simplified form.
Question 8: Which of these is the correct decimal form of 1%?
- 0.01
- 0.001
- 1.0
- 0.1
Answer: A. 0.01
Explanation: To convert a percentage to a decimal, you divide by 100. Therefore, 1 divided by 100 equals 0.01, which is the correct decimal representation for one percent.
Question 9: What fraction is equivalent to 25%?
- 1/4
- 3/4
- 1/2
- 1/3
Answer: A. 1/4
Explanation: 25% is 25 out of 100. By dividing both 25 and 100 by 25, we simplify the fraction to 1/4, showing that 25% is one-quarter of a whole.
Question 10: Percentages are used to do which of the following?
- Order and compare parts
- Only subtract numbers
- Only add numbers
- Measure only weight
Answer: A. Order and compare parts
Explanation: Percentages are a versatile tool used to order, compare, and express parts of a whole, helping us understand numerical information in many familiar situations like grades or shopping.