Maths Playing With Numbers part 26 (Addition division rules) CBSE Class 6 Mathematics VI | Summary and Q&A

TL;DR

Learn additional divisibility rules that can help quickly determine if a number is divisible by another number.

Key Insights

• #️⃣ Divisibility rules can help quickly determine if a number is divisible by another number.
• 🥶 Divisibility rules rely on the relationships between factors and co-prime numbers.
• #️⃣ The sum and difference of two divisible numbers are also divisible by that number.

Transcript

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Questions & Answers

Q: What is the first additional divisibility rule mentioned in the video?

The first additional divisibility rule states that if a number is divisible by another number, it is also divisible by each of its factors. For example, if a number is divisible by 8, it is also divisible by 1, 2, 4, and 8.

Q: How can the second additional divisibility rule be applied?

The second additional divisibility rule states that if a number is divisible by two co-prime numbers, it is divisible by their product. For instance, if a number is divisible by 2 and 3 (which are co-prime numbers), it is also divisible by their product, which is 6.

Q: What does the third additional divisibility rule state?

The third additional divisibility rule states that if two given numbers are divisible by a number, their sum is also divisible by that number. For example, if both 16 and 32 are divisible by 8, their sum (48) will also be divisible by 8.

Q: How does the fourth additional divisibility rule work?

The fourth additional divisibility rule states that if two given numbers are divisible by a number, their difference is also divisible by that number. So, if 16 and 56 are both divisible by 8, their difference (40) will also be divisible by 8.

Summary & Key Takeaways

• Divisibility rule: If a number is divisible by another number, it is also divisible by each of its factors.

• Divisibility rule: If a number is divisible by two co-prime numbers, it is divisible by their product.

• Divisibility rule: If two given numbers are divisible by a number, their sum is also divisible by that number.

• Divisibility rule: If two given numbers are divisible by a number, their difference is also divisible by that number.