190 LearnersLast updated on May 26th, 2025
Divisibility Rule of 791
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 791.
What is the Divisibility Rule of 791?
The divisibility rule for 791 is a method by which we can find out if a number is divisible by 791 or not without using the division method. Check whether 1582 is divisible by 791 with the divisibility rule.
Step 1: Separate the number into two parts, the last three digits and the rest of the number. Here in 1582, separate it into 582 and 1.
Step 2: Multiply the first part (582) by 9. 582 × 9 = 5238.
Step 3: Subtract the result from Step 2 from the second part (1). 1 - 5238 = -5237.
Step 4: Check if the result from Step 3 is a multiple of 791 or zero. If it is, the number is divisible by 791. Since -5237 is not a multiple of 791, 1582 is not divisible by 791.
Tips and Tricks for Divisibility Rule of 791
Learning the divisibility rule will help kids to master division. Let’s learn a few tips and tricks for the divisibility rule of 791.
Know the multiples of 791:
Memorize the multiples of 791 (791, 1582, 2373, 3164…etc.) to quickly check the divisibility. If the result from subtraction is a multiple of 791 or zero, then the number is divisible by 791.
Use absolute values:
If the result we get after subtraction is negative, consider it as positive for checking the divisibility of a number.
Repeat the process for large numbers:
Students should keep repeating the divisibility process until they reach a small number to check against 791.
For example: Check if 3164 is divisible by 791 using the divisibility test. Separate 3164 into 164 and 3. Multiply the first part (164) by 9, i.e., 164 × 9 = 1476. Subtract the remaining digits 3 from 1476, 3 - 1476 = -1473. Since -1473 is not a multiple of 791, 3164 is not divisible by 791.
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 791
The divisibility rule of 791 helps us to quickly check if the given number is divisible by 791, but common mistakes like calculation errors lead to incorrect calculations. Here we will understand some common mistakes that will help you to understand.
Mistake 1
Not following the correct steps.
Students should follow the correct steps that involve separating the number into parts and multiplying the first part by 9.
Mistake 2
Using incorrect parts for multiplication.
Students should ensure they are multiplying the correct part of the number by 9.
Mistake 3
Students should ensure they are multiplying the correct part of the number by 9.
Students often stop the process after they have a large number resulting after subtraction. The process should be repeated until we get the smallest number to check against 791.
Mistake 4
Not considering the absolute values.
Students should consider the absolute value while checking for divisibility if the subtraction result is negative.
Mistake 5
Confusing the steps.
Students often confuse the steps or forget them; to avoid this error, students should practice regularly.
Divisibility Rule of 791 Examples
Problem 1
Is 2373 divisible by 791?
Yes, 2373 is divisible by 791.
Explanation
To check if 2373 is divisible by 791, follow these steps:
1) Multiply the last digit by 9, 3 × 9 = 27.
2) Add the result to the remaining digits, excluding the last digit, 237 + 27 = 264.
3) Since 264 is a multiple of 264 (791 × 3 = 2373), the original number is divisible by 791.
Problem 2
Check the divisibility rule of 791 for 1582.
Yes, 1582 is divisible by 791.
Explanation
To determine if 1582 is divisible by 791, follow these steps:
1) Multiply the last digit by 9, 2 × 9 = 18.
2) Add the result to the remaining digits, excluding the last digit, 158 + 18 = 176.
3) Since 176 is a multiple of 176 (791 × 2 = 1582), the original number is divisible by 791.
Problem 3
Is -791 divisible by 791?
Yes, -791 is divisible by 791.
Explanation
To check if -791 is divisible by 791, disregard the negative sign and check the divisibility:
1) Multiply the last digit by 9, 1 × 9 = 9.
2) Add the result to the remaining digits, excluding the last digit, 79 + 9 = 88.
3) Verify that 88 is a multiple of 88 (791 × 1 = 791), confirming divisibility.
Problem 4
Can 1585 be divisible by 791 following the divisibility rule?
No, 1585 isn't divisible by 791.
Explanation
To verify if 1585 is divisible by 791, apply the divisibility steps:
1) Multiply the last digit by 9, 5 × 9 = 45.
2) Add the result to the remaining digits, excluding the last digit, 158 + 45 = 203.
3) Since 203 isn't a multiple of 791, the original number is not divisible by 791.
Problem 5
Check the divisibility rule of 791 for 7910.
Yes, 7910 is divisible by 791.
Explanation
To determine if 7910 is divisible by 791, apply the rule:
1) Multiply the last digit by 9, 0 × 9 = 0.
2) Add the result to the remaining digits, excluding the last digit, 791 + 0 = 791.
3) Since 791 is a multiple of 791 (791 × 10 = 7910), the number is divisible by 791.
FAQs on The divisibility rule for 791 involves separating the number into parts, multiplying the first part by 9, and subtracting this result from the second part. If the result is a multiple of 791 or zero, the number is divisible by 791.Divisibility Rule of 791
1. What is the divisibility rule for 791?
2.How many numbers are there between 1 and 3164 that are divisible by 791?
3. Is 2373 divisible by 791?
4.What if I get 0 after subtracting?
5.Does the divisibility rule of 791 apply to all integers?
6.How can children in United States use numbers in everyday life to understand Divisibility Rule of 791?
7.What are some fun ways kids in United States can practice Divisibility Rule of 791 with numbers?
8.What role do numbers and Divisibility Rule of 791 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 791 skills?
Important Glossaries for Divisibility Rule of 791
- Divisibility rule: A set of rules used to determine whether a number is divisible by another number without performing division.
- Multiples: Results obtained by multiplying a number by an integer. For example, multiples of 791 are 791, 1582, 2373, and so on.
- Subtraction: A process of finding the difference between two numbers by reducing one number from another.
- Absolute value: The non-negative value of a number without regard to its sign.
- Integers: Numbers that include all whole numbers, negative numbers, and zero.
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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.
