146 LearnersLast updated on May 26th, 2025
Divisibility Rule of 981
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 981.
What is the Divisibility Rule of 981?
The divisibility rule for 981 is a method by which we can find out if a number is divisible by 981 or not without using the division method. Check whether 2943 is divisible by 981 with the divisibility rule.
Step 1: Break down 981 into smaller factors that are easier to handle. The factors of 981 are 3, 9, and 37. Check if the number is divisible by these factors.
Step 2: Check divisibility by 3. Add the digits of the number 2943: 2 + 9 + 4 + 3 = 18. Since 18 is divisible by 3, 2943 is divisible by 3.
Step 3: Check divisibility by 9. Sum the digits again: 2 + 9 + 4 + 3 = 18. Since 18 is divisible by 9, 2943 is divisible by 9.
Step 4: Check divisibility by 37. Use long division or a calculator to check if 2943 divided by 37 gives a whole number. If it does, then the number is divisible by 37.
Since 2943 is divisible by 3, 9, and 37, it is divisible by 981.
Tips and Tricks for Divisibility Rule of 981
Learning the divisibility rule will help kids master division. Let’s learn a few tips and tricks for the divisibility rule of 981.
Know the factors of 981:
Memorize the factors of 981 (3, 9, 37) to quickly check divisibility. A number divisible by all these factors is divisible by 981.
Use divisibility rules for smaller factors:
Use the known divisibility rules for 3, 9, and 37 when checking numbers.
Repeat the process for large numbers:
Students should keep repeating the divisibility process until they reach a small number that is divisible by 981.
Use the division method to verify:
Students can use the division method 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 981
The divisibility rule of 981 helps us quickly check if a given number is divisible by 981, but common mistakes like calculation errors lead to incorrect calculations. Here we will understand some common mistakes that will help you understand.
Mistake 1
Not following the correct steps.
Students should follow the correct steps, which involve checking divisibility for each factor of 981.
Divisibility Rule of 981 Examples
Problem 1
Is 1962 divisible by 981?
Yes, 1962 is divisible by 981.
Explanation
To determine if 1962 is divisible by 981, we can use the following method:
1) Divide the number by 981 to check for an integer result: 1962 ÷ 981 = 2.
2) Since the result is an integer (2), 1962 is divisible by 981.
Problem 2
Check the divisibility rule of 981 for 3924.
Yes, 3924 is divisible by 981.
Explanation
For checking if 3924 is divisible by 981, follow these steps:
1) Divide 3924 by 981: 3924 ÷ 981 = 4.
2) The result is a whole number (4), indicating that 3924 is divisible by 981.
Problem 3
Is -4905 divisible by 981?
Yes, -4905 is divisible by 981.
Explanation
To check if -4905 is divisible by 981:
1) Remove the negative sign and divide 4905 by 981: 4905 ÷ 981 = 5.
2) The result is an integer (5), so -4905 is divisible by 981.
Problem 4
Can 1470 be divisible by 981 following the divisibility rule?
No, 1470 isn't divisible by 981.
Explanation
To check if 1470 is divisible by 981:
1) Divide 1470 by 981: 1470 ÷ 981 ≈ 1.498.
2) The result is not a whole number, so 1470 is not divisible by 981.
Problem 5
Check the divisibility rule of 981 for 2943.
Yes, 2943 is divisible by 981.
Explanation
To verify if 2943 is divisible by 981:
1) Divide 2943 by 981: 2943 ÷ 981 = 3.
2) Since the result is an integer (3), 2943 is divisible by 981.
FAQs on Divisibility Rule of 981
1.What is the divisibility rule for 981?
2. How many numbers are there between 1 and 5000 that are divisible by 981?
3.Is 2943 divisible by 981?
4.What if I get 0 after checking with factors?
5.Does the divisibility rule of 981 apply to all integers?
6.How can children in Singapore use numbers in everyday life to understand Divisibility Rule of 981?
7.What are some fun ways kids in Singapore can practice Divisibility Rule of 981 with numbers?
8.What role do numbers and Divisibility Rule of 981 play in helping children in Singapore develop problem-solving skills?
9.How can families in Singapore create number-rich environments to improve Divisibility Rule of 981 skills?
Important Glossaries for Divisibility Rule of 981
- Divisibility rule: The set of rules used to find out whether a number is divisible by another number.
- Factors: Numbers that divide another number exactly without leaving a remainder. For example, 3, 9, and 37 are factors of 981.
- Multiples: Results obtained by multiplying a number by an integer. For example, multiples of 981 are 981, 1962, 2943, etc.
- Integers: Whole numbers, including negative numbers and zero.
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About BrightChamps in Singapore
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.
