208 LearnersLast updated on May 26th, 2025
Divisibility Rule of 217
The divisibility rule is a way to determine whether a number is divisible by another number without using the division method. In real life, we can use divisibility rules for quick math, dividing things evenly, and sorting items. In this topic, we will learn about the divisibility rule of 217.
What is the Divisibility Rule of 217?
The divisibility rule for 217 is a method by which we can find out if a number is divisible by 217 or not without using the division method. Check whether 434 is divisible by 217 with the divisibility rule.
Step 1: Break down the number into partial sums that can be easily evaluated. For example, 434 can be seen as 434 = 217 + 217.
Step 2: Verify that each part is divisible by 217. Here, both parts are clearly divisible by 217.
Step 3: Since both parts are divisible by 217, the entire number 434 is also divisible by 217.
Tips and Tricks for Divisibility Rule of 217
Learn divisibility rules to help master division. Let’s learn a few tips and tricks for the divisibility rule of 217.
Know the multiples of 217:
Memorize the multiples of 217 (217, 434, 651, 868, etc.) to quickly check divisibility. If a number can be broken down into these parts, it is divisible by 217.
Use estimation:
Estimate if a number is close to a multiple of 217. This can help quickly check divisibility without lengthy calculations.
Repeat the process for large numbers:
For large numbers, break down the number into smaller sums or components that are easier to evaluate for divisibility by 217.
Use the division method to verify:
Students can use the division method to verify and crosscheck their results. This will help them verify and also learn.
Common Mistakes and How to Avoid Them in Divisibility Rule of 217
The divisibility rule of 217 helps us quickly check if a given number is divisible by 217, but common mistakes like calculation errors can lead to incorrect results. Here we will understand some common mistakes and how to avoid them.
Mistake 1
Not breaking down the number correctly.
Ensure the number is broken down into parts that can be easily checked for divisibility by 217.
Mistake 2
Not verifying each part.
Verify that each part is actually divisible by 217 before concluding the whole number is divisible.
Mistake 3
Confusing the steps.
Practice regularly to avoid confusing the steps. Clearly outline each part of the process.
Divisibility Rule of 217 Examples
Problem 1
Is the batch number 6511 divisible by 217?
Yes, 6511 is divisible by 217.
Explanation
To determine if 6511 is divisible by 217, follow these steps:
1) Multiply the last digit by 2, which gives 1 × 2 = 2.
2) Subtract this result from the remaining leading digits, 651 − 2 = 649.
3) Check if 649 is divisible by 217. Yes, 649 is divisible by 217 (217 × 3 = 651).
Problem 2
Check the divisibility rule of 217 against the product code 1085.
No, 1085 is not divisible by 217.
Explanation
To check the divisibility of 1085 by 217:
1) Multiply the last digit by 2, resulting in 5 × 2 = 10.
2) Subtract this from the remaining digits, 108 − 10 = 98.
3) Since 98 is not a multiple of 217, 1085 is not divisible by 217.
Problem 3
Is the invoice number 4340 divisible by 217?
No, 4340 is not divisible by 217.
Explanation
To verify the divisibility of 4340 by 217:
1) Multiply the last digit by 2, which is 0 × 2 = 0.
2) Subtract this from the preceding digits, 434 − 0 = 434.
3) Since 434 is not a multiple of 217, 4340 is not divisible by 217.
Problem 4
Can the shipment ID 2170 be divisible by 217 using the divisibility rule?
Yes, 2170 is divisible by 217.
Explanation
To check if 2170 is divisible by 217:
1) Multiply the last digit by 2, resulting in 0 × 2 = 0.
2) Subtract this from the remaining digits, 217 − 0 = 217.
3) The result is exactly 217, which is a multiple of 217 (217 × 1 = 217), thus 2170 is divisible by 217.
Problem 5
Verify if the serial number 8692 is divisible by 217.
Yes, 8692 is divisible by 217.
Explanation
To check the divisibility of 8692 by 217:
1) Multiply the last digit by 2, which yields 2 × 2 = 4.
2) Subtract the result from the other digits, 869 − 4 = 865.
3) Since 865 is a multiple of 217 (217 × 4 = 868), 8692 is divisible by 217.
FAQs on Divisibility Rule of 217
1.What is the divisibility rule for 217?
2.How do you check if a number is divisible by 217?
3. Is 651 divisible by 217?
4. What if I can't easily break down the number?
5.Does the divisibility rule of 217 apply to all integers?
6.How can children in Oman use numbers in everyday life to understand Divisibility Rule of 217?
7.What are some fun ways kids in Oman can practice Divisibility Rule of 217 with numbers?
8.What role do numbers and Divisibility Rule of 217 play in helping children in Oman develop problem-solving skills?
9.How can families in Oman create number-rich environments to improve Divisibility Rule of 217 skills?
Important Glossaries for Divisibility Rule of 217
- Divisibility rule: The set of rules used to determine whether a number is divisible by another number.
- Multiples: Results obtained by multiplying a number by an integer. For example, multiples of 217 are 217, 434, 651, etc.
- Estimation: Rough calculation to assess the possibility of division without exact computation.
- Integer: A number that includes all whole numbers, negative numbers, and zero.
- Verification: The process of confirming the validity of a result, such as using division to check divisibility.
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About BrightChamps in Oman
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.
