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.
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 coprime numbers, it is divisible by their product. For instance, if a number is divisible by 2 and 3 (which are coprime 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 coprime 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.