193 LearnersLast updated on May 26th, 2025
Divisibility Rule of 312
The divisibility rule is a way to find out whether a number is divisible by another number without using the division method. In real life, we can use the divisibility rule for quick math, dividing things evenly, and sorting things. In this topic, we will learn about the divisibility rule of 312.
What is the Divisibility Rule of 312?
The divisibility rule for 312 is a method by which we can find out if a number is divisible by 312 or not without using the division method. Check whether 936 is divisible by 312 with the divisibility rule.
Step 1: Check if the number is divisible by 3. For 936, sum the digits: 9+3+6=18, which is divisible by 3.
Step 2: Check if the number is divisible by 4. The last two digits of 936 are 36, and 36 is divisible by 4.
Step 3: Check if the number is divisible by 13. Divide 936 by 13; 936 ÷ 13 = 72, which is an integer.
Since 936 passes all these conditions, it is divisible by 312.
Tips and Tricks for Divisibility Rule of 312
Learning the divisibility rule will help kids master division. Let’s learn a few tips and tricks for the divisibility rule of 312.
1. Know the multiples of 312:
Memorize some multiples of 312 (e.g., 312, 624, 936, etc.) to quickly check divisibility. If a number is a multiple of 312, it is divisible by 312.
2. Use the divisibility rules of 3, 4, and 13:
For a number to be divisible by 312, it must be divisible by 3, 4, and 13. This makes it easier to check larger numbers.
3. Repeat the process for large numbers:
Students should keep repeating the divisibility process for each sub-rule (3, 4, 13) until they reach a conclusion.
4. Use the division method to verify:
Students can use the division method as a way to verify and cross-check their results. This will help them to verify and also learn.
Common Mistakes and How to Avoid Them in Divisibility Rule of 312
The divisibility rule of 312 helps us quickly check if a given number is divisible by 312, but common mistakes like calculation errors lead to incorrect conclusions. Here we will understand some common mistakes and how to avoid them.
Mistake 1
Not following all sub-rules.
Ensure you check divisibility by 3, 4, and 13, as 312 is the product of these prime factors.
Mistake 2
Incorrect calculation of digit sums for divisibility by 3.
Carefully add the digits of the number and check if the sum is divisible by 3.
Mistake 3
Incorrect handling of the last two digits for divisibility by 4.
Always verify divisibility using only the last two digits of the number.
Mistake 4
Not performing the division for the 13 rule.
Divide the number by 13 to verify divisibility without assuming shortcuts.
Divisibility Rule of 312 Examples
Problem 1
Is 1248 divisible by 312?
Yes, 1248 is divisible by 312.
Explanation
To check if 1248 is divisible by 312, we can use a simplified approach:
1) Divide 1248 by 312 directly: 1248 ÷ 312 = 4.
2) The result is an integer, so 1248 is divisible by 312.
Problem 2
Check the divisibility rule of 312 for 624
Yes, 624 is divisible by 312.
Explanation
For checking the divisibility rule of 312 for 624:
1) Divide 624 by 312 directly: 624 ÷ 312 = 2.
2) The result is an integer, so 624 is divisible by 312.
Problem 3
Is 156 divisible by 312?
No, 156 is not divisible by 312.
Explanation
To check if 156 is divisible by 312:
1) Divide 156 by 312 directly: 156 ÷ 312 ≈ 0.5.
2) The result is not an integer, so 156 is not divisible by 312.
Problem 4
Can 936 be divisible by 312 following the divisibility rule?
Yes, 936 is divisible by 312.
Explanation
To check if 936 is divisible by 312:
1) Divide 936 by 312 directly: 936 ÷ 312 = 3.
2) The result is an integer, so 936 is divisible by 312.
Problem 5
Check the divisibility rule of 312 for 6240
Yes, 6240 is divisible by 312.
Explanation
: To check divisibility:
1) Divide 6240 by 312 directly: 6240 ÷ 312 = 20.
2) The result is an integer, so 6240 is divisible by 312.
FAQs on Divisibility Rule of 312
1.What is the divisibility rule for 312?
2.How can I quickly check if a number is divisible by 312?
3. Is 1248 divisible by 312?
4.What if I make an error in one of the sub-rules?
5.Does the divisibility rule of 312 apply to all integers?
6.How can children in United States use numbers in everyday life to understand Divisibility Rule of 312?
7.What are some fun ways kids in United States can practice Divisibility Rule of 312 with numbers?
8.What role do numbers and Divisibility Rule of 312 play in helping children in United States develop problem-solving skills?
9.How can families in United States create number-rich environments to improve Divisibility Rule of 312 skills?
Important Glossaries for Divisibility Rule of 312
- Divisibility rule: The set of rules used to find out whether a number is divisible by another number or not. For example, a number is divisible by 3 if the sum of its digits is divisible by 3.
- Multiples: Multiples are the results we get after multiplying a number by an integer. For example, multiples of 312 are 312, 624, 936, etc.
- Integers: Integers are the numbers that include all the whole numbers, negative numbers, and zero.
- Division: Division is the process of finding out how many times one number is contained within another.
- Factors: Factors are numbers that can be multiplied together to get another number. For example, factors of 312 include 3, 4, and 13.
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About BrightChamps in United States
Hiralee Lalitkumar Makwana
About the Author
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
Fun Fact
: She loves to read number jokes and games.
