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Percent and Percentage — Flashcards

ICSE · Class 8 · Mathematics

24 flashcards for Percent and Percentage (ICSE Class 8 Mathematics) to test yourself on key terms and facts. Sample: "Solve: What percent of 144 is 36?"

82 questions24 flashcards7 formulas & key relations5 concepts

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24 Flashcards·
Finding percent of a numberFinding the whole from percentMixed percentage evaluationSalary and savingsPercentage errorRemaining percentageElection votesDepreciation after one year
Card 1Finding percent of a number

Solve: What percent of 144 is 36?

Answer

Step 1: Use the formula x as the percent of y = x/y × 100%. Step 2: Substitute the values: 36/144 × 100%. Step 3: Simplify: 1/4 × 100% = 25%. Answer: 25%…

Card 2Finding the whole from percent

Solve: 32% of a number is 80. Find the number.

Answer

Step 1: Use x% of y = x/100 × y. Step 2: Let the number be n. Step 3: 32/100 × n = 80. Step 4: n = 80 × 100/32 = 250. Answer: 250…

Card 3Mixed percentage evaluation

Solve: 16% of 150 - 25% of 84 + 8% of 550

Answer

Step 1: Find each part. 16% of 150 = 16/100 × 150 = 24. 25% of 84 = 25/100 × 84 = 21. 8% of 550 = 8/100 × 550 = 44. Step 2: Substitute in the expression. 24 - 21 + 44 = 47. Answer: 47…

Card 4Salary and savings

A man spends 65% of his salary and saves ₹525 per month. Find his monthly salary.

Answer

Step 1: If 65% is spent, then 35% is saved. Step 2: 35% of salary = ₹525. Step 3: Let salary be S. 35/100 × S = 525. Step 4: S = 525 × 100/35 = 1500. Answer: ₹1,500…

Card 5Percentage error

Find the percentage error when 4.0 is wrongly read as 4.48.

Answer

Step 1: Find the error. 4.48 - 4.0 = 0.48. Step 2: Use percentage error = error/original × 100%. Step 3: 0.48/4.0 × 100% = 12%. Answer: 12%…

Card 6Remaining percentage

Out of 500 articles, 70 are broken. Find the percentage of remaining articles.

Answer

Step 1: Find remaining articles. 500 - 70 = 430. Step 2: Use percentage = part/whole × 100%. 430/500 × 100% = 86%. Answer: 86%…

Card 7Election votes

In an election, one candidate secured 43% of the votes and lost by 4900 votes. Find total votes polled.

Answer

Step 1: Winning candidate got 100% - 43% = 57%. Step 2: Difference = 57% - 43% = 14% of votes. Step 3: 14% of total = 4900. Step 4: Total votes = 4900 × 100/14 = 35000. Answer: 35,000 votes…

Card 8Depreciation after one year

Solve: The cost of a machine is ₹10,000 and it depreciates by 10% per year. Find the cost after one year.

Answer

Step 1: Depreciation after one year = 10% of ₹10,000. Step 2: 10/100 × 10000 = ₹1000. Step 3: New value = 10000 - 1000 = ₹9000. Answer: ₹9,000…

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Frequently Asked Questions

What are the important topics in Percent and Percentage for ICSE Class 8 Mathematics?
Key topics in Percent and Percentage include Core Meaning and Basic Conversions, Finding Percent, Whole, and Part, Percentage Increase, Decrease, and Change, Depreciation. Study these first, then practise questions on each for Class 8 exams.
How many flashcards are available for Percent and Percentage?
There are 24 flashcards for Percent and Percentage covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Percent and Percentage for Class 8 exams?
Learn the core ideas first, then work through the 82 practice questions on Percent and Percentage. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

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