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Divisibility Rules for 13
The divisibility rules for 13 state that a number is divisible by 13 if the sum of its digits is divisible by 13. Additionally, a number is divisible by 13 if the number formed by its last two digits is divisible by 13.
Different Divisibility Rules For 13
13 can be evenly divided by 1, 3, and 13.
13 can also be evenly divided by 2, 4, 6, and 9, but these divisibility rules require more than just a glance at the number.
To test if 13 is evenly divisible by 2, double the number and see if the result is evenly divisible by 2. To test if 13 is evenly divisible by 4, double the number and see if the result is evenly divisible by 4. To test if 13 is evenly divisible by 6, double the number and see if the result is evenly divisible by 6. To test if 13 is evenly divisible by 9, double the number and see if the result is evenly divisible by 9.
If the result of doubling the number is evenly divisible by 2, 4, 6, or 9, then 13 is evenly divisible by those numbers.
Divisibility Rule 1:
The divisibility rule 1 states that a number is divisible by 1 if it is not divisible by anything else. In other words, a number is divisible by 1 if it is a whole number.
Divisibility Rule 2:
If the last digit of a number is divisible by 2, the number is divisible by 2.
Examples:
- The last digit of the number 1234 is 4. This number is divisible by 2.
- The last digit of the number 987654 is 6. This number is divisible by 2.
Also Read: The Secrets to Improving Maths Calculation Speed
Divisibility Rule 3:
- The number is divisible by 3 if the sum of its digits is divisible by 3.
- For example, the number 153 is divisible by 3 because the sum of its digits, 1+5+3, is divisible by 3.
Divisibility Rule 4:
- If the last digit of a number is divisible by 4, the number is divisible by 4.
- For example, the number 12,345 is divisible by 4 because the last digit, 5, is divisible by 4.
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Frequently Asked Questions (FAQs) on Divisibility Rules For 13
The three most important things I learned in my marketing class were how to create a marketing plan, how to use social media for marketing purposes, and how to measure the effectiveness of a marketing campaign.
Divisibility rules help students determine if a number is divisible by another number. This is helpful when dividing numbers, and when determining if a number is a prime number. What are the three most important things you learned in your marketing class?
Why study divisibility rules?
