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Exponents — Flashcards

ICSE · Class 8 · Mathematics

24 flashcards for Exponents (ICSE Class 8 Mathematics) to test yourself on key terms and facts. Sample: "Solve: 2 × 2 × 2 × 2 × 2 = ? Write the answer"

40 questions24 flashcards21 formulas & key relations5 concepts

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24 Flashcards·
Basic exponent formMeaning of exponentsProduct LawQuotient LawPower Law
Card 1Basic exponent form

Solve: 2 × 2 × 2 × 2 × 2 = ? Write the answer using exponents.

Answer

Step 1: Count how many times 2 is multiplied by itself. Step 2: It is multiplied 5 times. Step 3: So the exponential form is 2^5. Answer: 2 × 2 × 2 × 2 × 2 = 2^5 = 32.

Card 2Meaning of exponents

What does x^n mean? Give a small example.

Answer

x^n means x raised to the power n. It means x is multiplied by itself n times. Example: 3^4 = 3 × 3 × 3 × 3 = 81. Here, 3 is the base and 4 is the exponent.

Card 3Product Law

Solve using the Product Law: 3^3 × 3^5

Answer

Step 1: The bases are the same, so add the exponents. Step 2: 3^3 × 3^5 = 3^(3+5) Step 3: 3^8 = 6561 Answer: 6561.

Card 4Product Law

When do you use the Product Law? Show one example.

Answer

Use the Product Law when the bases are the same and powers are being multiplied. Formula: a^m × a^n = a^(m+n) Example: 5^2 × 5^3 = 5^(2+3) = 5^5 = 3125. Key idea: same base, so add the exponents.

Card 5Quotient Law

Solve using the Quotient Law: 2^12 ÷ 2^7

Answer

Step 1: The bases are the same, so subtract the exponents. Step 2: 2^12 ÷ 2^7 = 2^(12-7) Step 3: 2^5 = 32 Answer: 32.

Card 6Quotient Law

Solve using the Quotient Law: 2^6 ÷ 2^13

Answer

Step 1: Since the exponent in the denominator is larger, use the fraction form. Step 2: 2^6 ÷ 2^13 = 1 / 2^(13-6) Step 3: 1 / 2^7 = 1/128 Answer: 1/128.

Card 7Quotient Law

When do you use the Quotient Law? Show both cases.

Answer

Use the Quotient Law when dividing powers with the same base. Formula 1: a^m / a^n = a^(m-n), if m > n Formula 2: a^m / a^n = 1 / a^(n-m), if n > m Example 1: 7^5 / 7^2 = 7^3 = 343 Example 2: 7^2 / 7^…

Card 8Power Law

Solve using the Power Law: (3^5)^2

Answer

Step 1: When a power is raised to another power, multiply the exponents. Step 2: (3^5)^2 = 3^(5×2) Step 3: 3^10 = 59049 Answer: 59049.

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Frequently Asked Questions

What are the important topics in Exponents for ICSE Class 8 Mathematics?
Key topics in Exponents include Exponential Form and Meaning, Laws of Exponents, Negative Exponents, Zero Exponent and Sign of Negative Bases. Study these first, then practise questions on each for Class 8 exams.
How many flashcards are available for Exponents?
There are 24 flashcards for Exponents covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Exponents for Class 8 exams?
Learn the core ideas first, then work through the 40 practice questions on Exponents. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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