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Date:___________________

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Grade 5 - Mathematics
Prime Factorization of Numbers up to 500

Method:
  1. Factorize the given number.
  2. The factors chosen need to be a prime number.
Example: Find the prime factors of 144.
  1. Factorise 144.
  2. 144 = 12 x 12
  3. 12 can be written as 4 x 3.
  4. 4 can be written as 2x2.
  5. Hence 144 is 2x2x3x2x2x3.
Answer: 2x2x3x2x2x3


Directions: Find the prime factors of the following. Also write at least ten examples of your own.

Name: ___________________

Date:___________________

Grade 5 - Mathematics
Prime Factorization of Numbers up to 500

Q 1: What are the factors of the number: 173?
1x3x173
1x2x2x173
1x2x173
1x173

Q 2: What are the factors of the number: 393?
1x2x3x131
1x2x2x3x131
1x3x131
1x3x3x131

Q 3: What are the factors of the number: 159?
1x2x2x3x53
1x2x3x53
1x3x53
1x3x3x53

Q 4: What are the factors of the number: 454?
1x2x227
1x2x2x2x227
1x2x3x227
1x2x2x227

Q 5: What are the factors of the number: 245?
1x3x5x7x7
1x2x2x5x7x7
1x2x5x7x7
1x5x7x7

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Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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