165 LearnersLast updated on May 26th, 2025
Divisibility Rule of 83
The divisibility rule is a method 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 items. In this topic, we will learn about the divisibility rule of 83.
What is the Divisibility Rule of 83?
The divisibility rule for 83 is a technique to determine if a number is divisible by 83 without using the division method. Let's check whether 415 is divisible by 83 using the divisibility rule.
Step 1: Multiply the last digit of the number by 5. In 415, 5 is the last digit, so multiply it by 5. 5 × 5 = 25.
Step 2: Subtract the result from Step 1 from the remaining values, excluding the last digit. i.e., 41 - 25 = 16.
Step 3: Since 16 is not a multiple of 83, 415 is not divisible by 83. If the result from step 2 is a multiple of 83, then the number is divisible by 83.
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Tips and Tricks for Divisibility Rule of 83
Learning the divisibility rule will help students master division. Let’s explore a few tips and tricks for the divisibility rule of 83.
Know the multiples of 83:
Memorize the multiples of 83 (83, 166, 249, 332, etc.) to quickly check divisibility. If the result from the subtraction is a multiple of 83, then the number is divisible by 83. If the result we get after subtraction is negative, we will avoid the symbol and consider it as positive for checking the divisibility of a number.
Repeat the process for large numbers:
Students should repeat the divisibility process until they reach a small number that is divisible by 83.
For example, check if 7476 is divisible by 83 using the divisibility test. Multiply the last digit by 5, i.e., 6 × 5 = 30.
Subtract 30 from the remaining digits, excluding the last digit: 747 - 30 = 717.
Repeat the process: 7 × 5 = 35. Subtract 35 from the remaining numbers: 71 - 35 = 36.
Since 36 is not a multiple of 83, 7476 is not divisible by 83.
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 verify and also learn.
Common Mistakes and How to Avoid Them in Divisibility Rule of 83
The divisibility rule of 83 helps us quickly check if the given number is divisible by 83, 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 the correct steps.
Students should follow the correct steps: multiply the last digit by 5, then subtract the result from the remaining digits excluding the last digit, and check if it is a multiple of 83.
Mistake 2
Including the last digit in subtraction.
Students should exclude the last digit while subtracting and include all the remaining digits.
Mistake 3
Not repeating the process when the result is large.
Students often stop the process after getting a large number as a result after subtraction. The process should be repeated until a small number that is divisible by 83 is obtained.
Mistake 4
Not considering the negative values.
Students should consider negative values as positive while checking for divisibility.
Mistake 5
Confusing the steps.
Students often confuse the steps or forget them. To avoid this error, students should practice regularly.
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Divisibility Rule of 83 Examples
Problem 1
Is 332 divisible by 83?
Yes, 332 is divisible by 83.
Explanation
To determine if 332 is divisible by 83, follow the steps:
1) Divide the number into parts such that one part is close to a multiple of 83. Here, 332 = 249 + 83.
2) Check if 249 is a multiple of 83. Yes, 249 is a multiple of 83 (83 × 3 = 249).
3) Since both parts are multiples of 83, 332 is divisible by 83.
Problem 2
Check the divisibility rule of 83 for 747.
Yes, 747 is divisible by 83.
Explanation
To verify the divisibility of 747 by 83:
1) Separate the number into a sum of two numbers, 747 = 664 + 83.
2) Check if 664 is a multiple of 83. Yes, 664 is a multiple of 83 (83 × 8 = 664).
3) Since both 664 and 83 are multiples of 83, 747 is divisible by 83.
Problem 3
Is 497 divisible by 83?
No, 497 is not divisible by 83.
Explanation
To check if 497 is divisible by 83, follow these steps:
1) Break down 497 into two parts, 415 + 82.
2) Check if 415 is a multiple of 83. No, 415 is not a multiple of 83.
3) Since 415 is not a multiple of 83, 497 is not divisible by 83.
Problem 4
Can 166 be divisible by 83 following the divisibility rule?
Yes, 166 is divisible by 83.
Explanation
To verify the divisibility of 166 by 83:
1) Split the number into 83 + 83.
2) Each part is a multiple of 83 (83 × 1 = 83).
3) Therefore, 166 is divisible by 83.
Problem 5
Check the divisibility rule of 83 for 1245.
No, 1245 is not divisible by 83.
Explanation
To check 1245 for divisibility by 83, we proceed as follows:
1) Break down 1245 into parts, such as 1162 + 83.
2) Verify if 1162 is a multiple of 83. No, 1162 is not a multiple of 83.
3) Since 1162 is not a multiple of 83, 1245 is not divisible by 83.
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FAQs on Divisibility Rule of 83
1.What is the divisibility rule for 83?
2.How many numbers are there between 1 and 500 that are divisible by 83?
3.Is 249 divisible by 83?
4.What if I get 0 after subtracting?
5.Does the divisibility rule of 83 apply to all integers?
6.How can children in India use numbers in everyday life to understand Divisibility Rule of 83?
7.What are some fun ways kids in India can practice Divisibility Rule of 83 with numbers?
8.What role do numbers and Divisibility Rule of 83 play in helping children in India develop problem-solving skills?
9.How can families in India create number-rich environments to improve Divisibility Rule of 83 skills?
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Important Glossaries for Divisibility Rule of 83
- Divisibility rule: A set of rules used to determine whether a number is divisible by another number without performing division.
- Multiples: The results obtained after multiplying a number by an integer. For example, multiples of 83 are 83, 166, 249, 332, etc.
- Integers: Numbers that include all whole numbers, negative numbers, and zero.
- Subtraction: The process of finding the difference between two numbers by reducing one number from another.
- Verification: The process of confirming the accuracy of a calculation or result, often by using an alternative method.
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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.
