Factors of 15

Factors of 15 are the numbers that divide the original number 15 evenly without leaving the remainder. Though the number 15 is composite, it has two factors other than one and the number itself. Factors of 15 are 1, 3, 5, and 15. You can introduce the concept of factors of a number to kids in elementary school so that they can solve math problems quickly. Learning arithmetic operations helps kids find the factors of 15 easily. 

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Kids must learn to find the factors of 15 to solve mathematical problems with speed and accuracy. Besides this, teach them pair and prime factors of 15. The pair factors of 15 are (1, 15) and (3, 5), whereas the prime factors of 15 are 3 x 5. Kids must remember that the pair factors of 15 can be positive or negative numbers. How would you teach factors of 15 to little ones? The best way would be to conduct math games for kids to keep them engaged in learning and retain the concept for a longer period of time. 

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What are the Factors of 15?

Factors of 15 are the numbers obtained when you completely divide the original number 15 with the integers without leaving the remainder. These numbers can be positive or negative but cannot be in decimal or fraction form. The factors of 15 are 1, 3, 5, and 15. You can find the factors of 15 using the division method. Besides this, kids must learn to find the pair and prime factors of 15. The pair factors of 15 are (1, 15) and (3, 5), and the prime factors of 15 are 3 x 5, where 3 and 5 are the prime numbers. These pair factors of 15 can also be negative numbers, and they are (-1, -15) and (-3, -5). The total sum of factors of 15 are 1 + 3 + 5 + 15 = 24. 

How to Find the Factors of 15?

To calculate the factors of 15, you need to divide the original number 15 with the integers evenly without the remainder. Kids must get acquainted with tables 15 to 25 to find the factors of 15 effectively. Check out the division method to calculate the factors of 15 as given below.

15/1 = 15

15/3 = 5

15/5 = 3

15/15 = 1

Therefore, factors of 15 are 1, 3, 5 and 15. 

Pair Factors of 15

To find the pair factors of 15, you need to multiply the integers in pairs to get the original number. These numbers can be positive or negative. Check out the multiplication method to calculate the pair factors of 15 as given below. 

1 x 15 = 15

3 x 5 = 15

5 x 3 = 15

15 x 1 = 15

Therefore, the positive pair factors of 15 are (1, 15) and (3, 5). You can also find the negative pair factors of 15 using the multiplication method. When you multiply two negative factors together, you get a positive result. The negative pair factors of 15 are (-1, -15) and (-3, -5). 

Prime Factors of 15

To find the prime factors of 15, you must divide the original number with the prime numbers until you get the quotient one. Check out the prime factorization method as given below. 

Step 1: Divide the original number with the prime number 3 since it is not divisible by the least prime number 2. 

15/3 = 5

Step 2: Divide the number 5 with the prime number 5 to get the quotient one. 

5/5 = 1

Therefore, the prime factors of 15 are 3 x 5. 

Check Factors Related Articles

Factors of 1Factors of 2
Factors of 3Factors of 4
Factors of 24 Factors of 18 

Solved Examples on Factors of 15 

Some solved examples on factors of 15 for kids are mentioned below. 

Example 1: Find out the common factors of 15 and 10

Solution: Factors of 15 = 1, 3, 5, and 15. 

Factors of 10 = 1, 2, 5, and 10

Therefore, the common factors of 15 and 10 are 1 and 5. 

Example 2: Tracy bought 15 Christmas caps for her family members. She equally distributed them to 5 family members. How many Christmas caps did each family member get?

Solution: Number of Christmas caps = 15

Number of family members = 5

Total number of Christmas caps received by each family member = 15/5 = 3

Therefore, the total number of Christmas caps received by each family member is 3. 

We hope this article on factors of 15 was useful to you. For more about activities, worksheets and games, explore worksheets for kids, math for kidspuzzles for kids, kids learning sections at Osmo. 

Frequently Asked Questions on Factors of 15

What are the factors of 15?

The factors of 15 are 1, 3, 5, and 15.

What are the pair factors of 15?

The pair factors of 15 are (1, 15) and (3, 5), whereas the negative pair factors of 15 are (-1, -15) and (-3, -5).

What are the prime factors of 15?

The prime factors of 15 are 3 x 5.

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