176 LearnersLast updated on May 26th, 2025
Divisibility Rule of 154
The divisibility rule is a technique to determine whether a number is divisible by another number without performing actual division. In real life, divisibility rules help with quick calculations, evenly distributing items, and organizing data. In this topic, we will explore the divisibility rule of 154.
What is the Divisibility Rule of 154?
The divisibility rule for 154 is a method to determine if a number is divisible by 154 without performing division. Let’s check whether 308 is divisible by 154 using the divisibility rule.
Step 1: Check divisibility by 2. The number 308 ends in 8, which is even, so it is divisible by 2.
Step 2: Check divisibility by 7. Apply the divisibility rule for 7: multiply the last digit (8) by 2, resulting in 16. Subtract this from the remaining leading part (30), giving 30 - 16 = 14. Since 14 is a multiple of 7, 308 is divisible by 7.
Step 3: Check divisibility by 11. For 11, alternate summing the digits: (3 + 8) - 0 = 11, which is a multiple of 11.
Step 4: Since 308 is divisible by 2, 7, and 11, it is also divisible by 154 (as 154 = 2 × 7 × 11).
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Tips and Tricks for Divisibility Rule of 154
- Memorize the prime factors: Know that 154 is the product of 2, 7, and 11. If a number is divisible by these three primes, it is divisible by 154.
- Use smaller tests: First, check divisibility by 2, then 7, and finally 11, to quickly determine if a number is divisible by 154.
- Break down large numbers: For large numbers, apply the prime factor tests separately and sequentially to simplify the calculation.
- Verify with division: Use actual division to confirm results when in doubt or to reinforce understanding of divisibility.
Common Mistakes and How to Avoid Them in Divisibility Rule of 154
Mistake 1
Ignoring one of the prime factors.
Always check for divisibility by 2, 7, and 11 to ensure the number is divisible by 154.
Mistake 2
Misapplying individual divisibility rules.
Review each rule separately and ensure correct application.
Mistake 3
Skipping steps for larger numbers.
Break down the problem into smaller parts and follow each step for accuracy.
Mistake 4
Forgetting the order of prime factors.
Memorize that 154 is 2 × 7 × 11 and check divisibility in that order.
Mistake 5
Confusing results from different tests.
Practice regularly to become familiar with each rule and avoid confusion.
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Divisibility Rule of 154 Examples
Problem 1
Is 462 divisible by 154?
Yes, 462 is divisible by 154.
Explanation
To check if 462 is divisible by 154, we can divide the number directly.
1) Divide 462 by 154.
2) 462 ÷ 154 = 3.
3) Since the result is a whole number, 462 is divisible by 154.
Problem 2
Check the divisibility rule of 154 for 924.
Yes, 924 is divisible by 154.
Explanation
To check if 924 is divisible by 154, we can perform the division.
1) Divide 924 by 154.
2) 924 ÷ 154 = 6.
3) The result is a whole number, indicating that 924 is divisible by 154.
Problem 3
Is 308 divisible by 154?
Yes, 308 is divisible by 154.
Explanation
To determine if 308 is divisible by 154, we divide the numbers.
1) Divide 308 by 154.
2) 308 ÷ 154 = 2.
3) As the division results in a whole number, 308 is divisible by 154.
Problem 4
Can 231 be divisible by 154 following the divisibility rule?
No, 231 isn't divisible by 154.
Explanation
To check if 231 is divisible by 154, we divide the numbers.
1) Divide 231 by 154.
2) 231 ÷ 154 ≈ 1.5.
3) Since the result is not a whole number, 231 is not divisible by 154.
Problem 5
Check the divisibility rule of 154 for 1540.
Yes, 1540 is divisible by 154.
Explanation
To verify if 1540 is divisible by 154, we divide the numbers.
1) Divide 1540 by 154.
2) 1540 ÷ 154 = 10.
3) Since the result is a whole number, 1540 is divisible by 154.
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FAQs on Divisibility Rule of 154
1.What is the divisibility rule for 154?
2.How many numbers between 1 and 500 are divisible by 154?
3. Is 462 divisible by 154?
4.What if only some prime factor tests pass?
5. Does the divisibility rule of 154 apply to all integers?
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Important Glossaries for Divisibility Rule of 154
- Divisibility rule: A set of guidelines to determine if one number is divisible by another without performing division.
- Prime factors: Basic numbers (greater than 1) that multiply together to give a number, such as 2, 7, and 11 for 154.
- Multiple: A number that can be divided by another number without a remainder. For example, 308 is a multiple of 154.
- Integer: Whole numbers, including negative numbers, positive numbers, and zero.
- Subtraction: The operation of finding the difference between numbers, used in checking divisibility by 7.
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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.
