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Divisibility Tricks Video Lecture | Vedic Mathematics for Junior Classes - Class 5
FAQs on Divisibility Tricks Video Lecture - Vedic Mathematics for Junior Classes - Class 5
| 1. What are some common divisibility rules? |  |
Ans. Some common divisibility rules include:
- A number is divisible by 2 if its last digit is even (0, 2, 4, 6, or 8).
- A number is divisible by 3 if the sum of its digits is divisible by 3.
- A number is divisible by 5 if its last digit is either 0 or 5.
- A number is divisible by 9 if the sum of its digits is divisible by 9.
- A number is divisible by 10 if its last digit is 0.
| 2. How can I check if a number is divisible by 4? | |
Ans. To check if a number is divisible by 4, you need to look at its last two digits. If the number formed by the last two digits is divisible by 4, then the original number is also divisible by 4. For example, if the last two digits are 24, 48, 72, etc., then the number is divisible by 4.
| 3. Can you explain the divisibility rule for 6? | |
Ans. The divisibility rule for 6 states that a number is divisible by 6 if it is divisible by both 2 and 3. This means that the number must be even (divisible by 2) and the sum of its digits must be divisible by 3. For example, the number 54 is divisible by 6 because it is even and the sum of its digits (5 + 4 = 9) is divisible by 3.
| 4. How do I determine if a number is divisible by 7? | |
Ans. Determining if a number is divisible by 7 can be a bit more complex. One method is to double the last digit of the number and subtract it from the remaining leading truncated number. If the result is divisible by 7, then the original number is also divisible by 7. Repeat this process until you obtain a number that is small enough to recognize if it is divisible by 7. For example, to check if 182 is divisible by 7, double the last digit (2 x 2 = 4) and subtract it from the remaining truncated number (18 - 4 = 14). Since 14 is divisible by 7, 182 is also divisible by 7.
| 5. How can I tell if a number is divisible by 8? | |
Ans. To determine if a number is divisible by 8, you need to look at its last three digits. If the number formed by the last three digits is divisible by 8, then the original number is also divisible by 8. For example, if the last three digits are 240, 480, 720, etc., then the number is divisible by 8.
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Dec 22, 2024 Last updated |
Video Description: Divisibility Tricks for Class 5 2024 is part of Vedic Mathematics for Junior Classes preparation.
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