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Quizzes > High School Quizzes > Mathematics

Mastering the Percentage Test Practice Quiz

Boost skills with targeted percentage practice questions

Difficulty: Moderate
Grade: Grade 7
Study OutcomesCheat Sheet
Colorful paper art promoting Percentage Power-Up math trivia for middle school students.

What is 50% of 100?
75
25
50
100
50% of 100 is 50 because 50% means half of the total. This basic calculation demonstrates the concept of percentages clearly.
Convert 0.2 to a percentage.
200%
0.2%
20%
2%
To convert a decimal to a percentage, multiply it by 100. Thus, 0.2 becomes 20%, which is the correct conversion.
What is 10% of 250?
10
25
40
50
10% of a number is the same as one-tenth of that number. One-tenth of 250 equals 25, making it the correct answer.
If you have 40 candies and 25% of them are red, how many red candies do you have?
12
8
10
15
To determine 25% of 40, multiply 40 by 0.25, which equals 10. This calculation confirms that 10 red candies is the correct answer.
Convert 50/100 to a percentage.
75%
25%
100%
50%
The fraction 50/100 simplifies to 0.5 as a decimal. When converted to a percentage, 0.5 becomes 50%, which is why the correct answer is 50%.
What is the percentage increase when a number rises from 80 to 100?
25%
20%
15%
30%
The increase is calculated by subtracting the original number from the new number and then dividing by the original (i.e., (100 - 80) / 80 = 0.25). Multiplying by 100 converts it to 25%.
What is 30% of 200?
70
60
80
30
Calculating 30% of 200 involves multiplying 200 by 0.30, which equals 60. This straightforward calculation confirms the correct answer.
A product's price drops from $80 to $60. What is the percent decrease?
30%
25%
15%
20%
The decrease is $20, and dividing 20 by the original $80 gives 0.25. Multiplying by 100, the percent decrease is 25%.
Which fraction is equivalent to 40%?
3/5
1/4
1/2
2/5
40% can be written as 40/100, which simplifies to 2/5. This shows the direct equivalence between the percentage and the fraction.
If 15 is 30% of a number, what is that number?
40
60
50
45
To find the whole, divide the part by the percentage in decimal form: 15 / 0.30 equals 50. This inverse calculation confirms the correct number.
What is the result of increasing 150 by 20%?
200
170
180
175
A 20% increase on 150 is computed as 150 multiplied by 0.20, which is 30. Adding this to 150 results in 180, making it the correct answer.
A school's enrollment increased from 400 to 480 students. What is the percentage increase?
30%
25%
20%
15%
The increase in enrollment is 80 students (480 - 400). Dividing 80 by the original 400 gives 0.20, or a 20% increase when converted to a percentage.
Express 12.5% as a fraction in simplest form.
1/8
1/16
1/4
1/10
12.5% is equivalent to 12.5/100, which simplifies to 1/8 when both numerator and denominator are divided by 12.5. This is the simplest fractional form.
If a shirt originally costs $40 and is on sale for 25% off, what is the sale price?
$30
$32
$35
$25
A 25% discount on a $40 shirt is calculated by multiplying 40 by 0.25, which is $10. Subtracting the discount from the original price gives a sale price of $30.
A student got 80% on a test that had 50 questions. How many questions did the student answer correctly?
50
45
35
40
80% of 50 questions is found by multiplying 50 by 0.80, which equals 40. This means the student answered 40 questions correctly.
A store increases the price of a laptop by 10% and then offers a 10% discount on the new price. What is the net effect on the price?
1% increase
1% decrease
10% decrease
No change
The laptop's price is first increased by 10%, then reduced by 10% on the higher price. Multiplying 1.10 by 0.90 results in 0.99, meaning the final price is 99% of the original, a net 1% decrease.
If a population of fish increases by 25% in one year and then decreases by 20% the next year, what is the overall percentage change?
5% increase
10% increase
5% decrease
0% change
Starting with an initial value, a 25% increase brings it to 125% of the original. A subsequent 20% decrease on the increased value returns it to 100% of the original, resulting in no overall change.
A jacket is marked up by 40% for retail, then sold at a 30% discount. What is the final price as a percentage of the original cost?
100% of the original
107% of the original
98% of the original
102% of the original
After a 40% markup, the price becomes 140% of the original. A 30% discount reduces this price to 70% of 140%, which equals 98% of the original cost.
In a class, 60% of students passed an exam. If 5 more students passed, the pass percentage increases to 65%. How many students are there in the class?
120
80
100
90
Let the total number of students be N. The equation 0.60N + 5 = 0.65N simplifies to 5 = 0.05N, which yields N = 100. This confirms that there are 100 students in the class.
A salesman earns a commission that is 5% of his total sales. If he increased his sales by 30% one month, by what percentage did his commission increase?
5%
30%
15%
35%
Since the commission is directly proportional to total sales, any increase in sales results in an equal percentage increase in commission. Therefore, a 30% increase in sales leads to a 30% increase in the commission.
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Study Outcomes

  1. Calculate percentages from given values and contexts.
  2. Convert between fractions, decimals, and percentages with accuracy.
  3. Analyze real-life scenarios to determine percentage increases or decreases.
  4. Apply percentage concepts to solve practical math problems.
  5. Synthesize problem-solving strategies for percentage-based questions.

Percentage Test Practice Cheat Sheet

  1. Percent fundamentals - Did you know percentages simply mean "per hundred"? That makes comparing parts super easy: 25% literally means 25 out of 100, so you can instantly gauge proportions at a glance. Embrace this idea and you'll never get lost in ratios again! Understanding Percent Lesson - Math Goodies
  2. Switching between forms - Converting fractions, decimals, and percentages is like speaking three dialects of the same language. Just divide by 100 to go from percent to decimal, or multiply by 100 to zoom back to percent form. Master these swaps and you'll solve any problem in the format that feels easiest! Percentage Worksheets - Math Goodies
  3. Finding a percentage of a number - To find, say, 20% of 50, first write 20% as 0.20 and then multiply: 50 × 0.20 = 10. This trick turns word problems into simple multiplication exercises. Practice enough and you'll do it in your head faster than a calculator! Percent Practice - MathBitsNotebook(Jr)
  4. Discovering the whole from a part - If you know 30 is 15% of some number, just turn 15% into 0.15 and divide: 30 ÷ 0.15 = 200. Boom - you've found the whole! This reverse-engineering technique is your secret weapon for sales tax, test scores, and beyond. Percentages Worksheets - Math‑Drills
  5. Percentage change - To figure out how much something has increased or decreased, subtract the original amount from the new one, divide by the original, then multiply by 100%. It's your go-to formula for discounts, markups, and growth rates. Soon you'll spot the real deal on every sale sign! 7th Grade Percentage Worksheets - BYJU'S
  6. Real‑world applications - From calculating sale prices to budgeting for tax and interest, percentages rule your wallet. By applying these concepts to everyday scenarios, you'll become a savvy shopper and financial whiz in no time. Start small - grab a grocery ad and work out the best deal! Percent Worksheets - Super Teacher Worksheets
  7. Visual tools - Bar models and tape diagrams turn abstract percents into colorful pictures. These visuals help you see relationships at a glance and untangle even the trickiest problems. Sketch one out next time you get stuck - you'll thank yourself later! 6th Grade Math Word Problems - Percentages
  8. Word‑problem practice - The more real questions you tackle, the sharper your problem‑solving instincts become. Dive into word problems that cover everything from sports stats to recipe adjustments. With each puzzle solved, you'll boost your confidence and your grade! Percentages Drills - Math Activities
  9. Percentages beyond 100% - Remember: percentages can exceed 100% (more than the whole) or dip below 1% (tiny fractions). Think of a crowd that doubled - that's 200% growth! Or the chance of winning a big prize - often less than 1%. Understanding these extremes gives you superpowers in analysis. Understanding Percent Lesson - Math Goodies
  10. Quick estimating - When you're shopping or checking a tip, you don't have time for lengthy math. Round numbers and use friendly benchmarks (like 10% or 25%) to estimate on the fly. With a few smart shortcuts, you'll become a percentage ninja in everyday life! How to Teach Percents So They Stick - Make Sense of Math
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