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“In Fourth Grade you learned to write numbers as a product of primes. Can you write 144 as the product of prime factors?” asked Mr. Moreno. “This is called prime factorization. A factor tree is one way to organize your work.”
- Brandon made a factor tree for 144. Look at his factor tree and read the explanation.
- Make a different factor tree for 144.
- What prime factors were identified using your factor tree from Question 3A?
Brandon rewrote his prime factorization using exponents.
2 2 2 2 3 3 = 144 can also be written as 24 32 = 144.
- Make a factor tree for 180.
- Write the prime factorization for 180 without exponents.
- Use exponents to write the prime factorization for 180.
Use the Factor Trees page in the Student Activity Book to practice using factor trees to find the prime factorization of a number.