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Playing with Numbers

ICSE · Class 6 · Mathematics

Flashcards for Playing with Numbers — ICSE Class 6 Mathematics. Quick Q&A cards covering key concepts, definitions, and formulas.

50 questions30 flashcards5 concepts

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30 Flashcards
Card 1Simplification using BODMAS

Simplify: 18 - 4 × 3 + 6

Answer

Step 1: Apply BODMAS — Multiplication first → 4 × 3 = 12<br>Step 2: Replace in expression → 18 - 12 + 6<br>Step 3: Perform subtraction and addition from left to right → (18 - 12) + 6 = 6 + 6 = 12<br>A…

Card 2Simplification using BODMAS

Simplify: 30 ÷ 6 + 4 × 2 - 5

Answer

Step 1: Division → 30 ÷ 6 = 5<br>Step 2: Multiplication → 4 × 2 = 8<br>Step 3: Replace → 5 + 8 - 5<br>Step 4: Left to right → (5 + 8) - 5 = 13 - 5 = 8<br>Answer: 8…

Card 3Simplification using BODMAS

Simplify: (15 + 5) of 2 ÷ 4

Answer

Step 1: Solve bracket → 15 + 5 = 20<br>Step 2: 'Of' means multiplication → 20 of 2 = 20 × 2 = 40<br>Step 3: Division → 40 ÷ 4 = 10<br>Answer: 10…

Card 4Simplification using Brackets

Simplify: 24 - [10 - {6 + (8 - 4)}]

Answer

Step 1: Innermost bracket → (8 - 4) = 4<br>Step 2: Curly bracket → {6 + 4} = 10<br>Step 3: Square bracket → [10 - 10] = 0<br>Step 4: Final → 24 - 0 = 24<br>Answer: 24…

Card 5Simplification using Brackets

Simplify: 40 - [18 - {10 + 6 ÷ (2 - 1)}]

Answer

Step 1: (2 - 1) = 1<br>Step 2: 6 ÷ 1 = 6<br>Step 3: {10 + 6} = 16<br>Step 4: [18 - 16] = 2<br>Step 5: 40 - 2 = 38<br>Answer: 38…

Card 6Factors

List all factors of 36.

Answer

To find factors, check numbers from 1 to 36 that divide 36 exactly:<br>1 × 36 = 36<br>2 × 18 = 36<br>3 × 12 = 36<br>4 × 9 = 36<br>6 × 6 = 36<br>So, factors are: 1, 2, 3, 4, 6, 9, 12, 18, 36…

Card 7Prime Numbers

Which of these are prime numbers: 17, 21, 29, 33, 41?

Answer

Prime numbers have only two factors: 1 and itself.<br>• 17 → factors: 1, 17 → Prime<br>• 21 → 1, 3, 7, 21 → Not prime<br>• 29 → 1, 29 → Prime<br>• 33 → 1, 3, 11, 33 → Not prime<br>• 41 → 1, 41 → Prime…

Card 8Prime Factors

Find the prime factors of 48.

Answer

Step 1: Divide 48 by smallest prime 2 → 48 ÷ 2 = 24<br>Step 2: 24 ÷ 2 = 12<br>Step 3: 12 ÷ 2 = 6<br>Step 4: 6 ÷ 2 = 3<br>Step 5: 3 ÷ 3 = 1<br>So, 48 = 2 × 2 × 2 × 2 × 3 = 2⁴ × 3<br>Prime factors: 2 an…

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Frequently Asked Questions

What are the important topics in Playing with Numbers for ICSE Class 6 Mathematics?
Playing with Numbers covers several key topics that are frequently asked in ICSE Class 6 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Playing with Numbers — ICSE Class 6 Mathematics?
Understand the core concepts first, then work through the 50 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Playing with Numbers?
There are 30 flashcards for Playing with Numbers covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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