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A number is a multiple of 312 if it's a multiple of 3, 8 and 13 at the same time
For example 1,248 is a multiple of 312 because 1 + 2 + 4 + 8 = 15, which means it's a multiple of 3, ends in 248, which means it's a multiple of 8, and 124 + 8 x 4 = 156, which means it's a multiple of 13
The rule works because 312 = 2^3 x 3 x 13
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What are the divisibility rules to find at least four factors of the number 312?
A number is a multiple of 312 if it's a multiple of 3, 8 and 13 at the same time
Is 312 divisible by 3?
Yes. 312 / 3 = 104Because, using your divisibility rules you know that the sum of the numbers (3+1+2) is 6 which is a multiple of 3. threfor you can say, that is does devide by three.
How can knowing the divisibility rules help to determine if a number is prime or composite?
Knowing the divisibility rules will help you by being able to recognize if a number has factors (other than one and itself) which are covered by the rules. This will save actually having to start doing divisions.
What are the divisibility rules of 18?
If the number is even and the sum of its digits is divisible by nine then the number is divisible by 18.
What is a divisibility rule for 5?
If the rules for 2 and 3 work, the number is divisibale by 5.
What are the divisibility rules to find at least four factors of the number 312?
A number is a multiple of 312 if it's a multiple of 3, 8 and 13 at the same time
What are the divisibility rules of all prime numbers?
The divisibility rules for a prime number is if it is ONLY divisible by 1, and itself.
What are reasons of using the disivility rules?
You can always check on the divisibility of a number by dividing it into another number. But if you know the divisibility rules, you can get that information easier and faster.
What number goes into all of the divisibility rules?
The number 0.
Is 312 divisible by 3?
Yes. 312 / 3 = 104Because, using your divisibility rules you know that the sum of the numbers (3+1+2) is 6 which is a multiple of 3. threfor you can say, that is does devide by three.
How many numbers can divided by that number?
divided by what number use your divisibility rules
What is divisibility rules for 15?
If a number is divisible by 3 and 5, it is divisible by 15.
How can knowing the divisibility rules help to determine if a number is prime or composite?
Knowing the divisibility rules will help you by being able to recognize if a number has factors (other than one and itself) which are covered by the rules. This will save actually having to start doing divisions.
Who invented the divisibility rules?
Oh honey, divisibility rules have been around longer than your grandma's secret meatloaf recipe. But if you want a name to drop at your next trivia night, credit goes to good ol' Euclid. He's the OG mathematician who laid down the law on how numbers can play nice and divide evenly.
What are the divisibility rules of 18?
If the number is even and the sum of its digits is divisible by nine then the number is divisible by 18.
What are the divisibility rules for 9?
a number is divisible by 9 if the sum of the digits is divisible by 9.
What is a divisibility rule for 5?
If the rules for 2 and 3 work, the number is divisibale by 5.
