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Factors and Multiples — Flashcards

ICSE · Class 5 · Mathematics

35 flashcards for Factors and Multiples (ICSE Class 5 Mathematics) to test yourself on key terms and facts. Sample: "Is 48 divisible by 2? Why?"

46 questions35 flashcards4 formulas & key relations4 concepts

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35 Flashcards·
Divisibility RulesPrime Factorization
Card 1Divisibility Rules

Is 48 divisible by 2? Why?

Answer

Yes, because 48 ends in 8, which is an even number. According to the divisibility rule of 2, any number ending in 0, 2, 4, 6, or 8 is divisible by 2.

Card 2Divisibility Rules

Is 135 divisible by 3? Show your work.

Answer

Step 1: Add the digits: 1 + 3 + 5 = 9. Step 2: Check if 9 is divisible by 3. Yes, 9 ÷ 3 = 3. So, 135 is divisible by 3.

Card 3Divisibility Rules

Is 216 divisible by 4? Explain.

Answer

Step 1: Look at the last two digits: 16. Step 2: Is 16 divisible by 4? Yes, 16 ÷ 4 = 4. So, 216 is divisible by 4.

Card 4Divisibility Rules

Is 425 divisible by 5?

Answer

Yes, because it ends in 5. Any number ending in 0 or 5 is divisible by 5.

Card 5Divisibility Rules

Is 144 divisible by 6? Why or why not?

Answer

Step 1: Check divisibility by 2 — 144 ends in 4 (even), so yes. Step 2: Check divisibility by 3 — 1 + 4 + 4 = 9, and 9 is divisible by 3. So, 144 is divisible by both 2 and 3, hence by 6.

Card 6Divisibility Rules

Is 279 divisible by 9?

Answer

Step 1: Add digits — 2 + 7 + 9 = 18. Step 2: 18 is divisible by 9 (18 ÷ 9 = 2). So, 279 is divisible by 9.

Card 7Divisibility Rules

Is 340 divisible by 10?

Answer

Yes, because it ends in 0. Any number ending in 0 is divisible by 10.

Card 8Prime Factorization

Find the prime factors of 36 using short division.

Answer

Step 1: Divide 36 by 2 → 18. Step 2: Divide 18 by 2 → 9. Step 3: Divide 9 by 3 → 3. Step 4: Divide 3 by 3 → 1. So, prime factors are 2, 2, 3, 3 or 2² × 3².

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Frequently Asked Questions

What are the important topics in Factors and Multiples for ICSE Class 5 Mathematics?
Key topics in Factors and Multiples include Factors and Multiples, Prime and Composite Numbers, Co-prime and Twin Prime Numbers, HCF (Highest Common Factor). Study these first, then practise questions on each for Class 5 exams.
How many flashcards are available for Factors and Multiples?
There are 35 flashcards for Factors and Multiples covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Factors and Multiples for Class 5 exams?
Learn the core ideas first, then work through the 46 practice questions on Factors and Multiples. 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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