Factor Trees
Part of the Factors & Fractions section of Coddy's Pre-Algebra journey. Lesson 6 of 56.
This is a factor tree. 90 is split into a factor pair, 9 and 10. Then each number is split again, until every number at the bottom is prime.
The numbers at the bottom are called leaves. They multiply back to 90: . This is the prime factorization of 90.
Challenge
Make a factor tree for 132. Start with any factor pair. Write one line per step, until every factor is prime.
Try it yourself
Write it as a product of primes
All lessons in Factors & Fractions
1Factors and Multiples
What a Factor IsDivisibility RulesMultiplesPrime or CompositeRecap: Factors and Multiples4What a Fraction Is
Parts of a WholeFractions on the LineA Fraction of a NumberImproper FractionsRecap: What a Fraction Is7Multiplying Fractions
Top Times TopCancel FirstWhole Times FractionA Fraction of a FractionRecap: Multiplying Fractions10Fractions in Stories
Part of a GroupWhat Is LeftSharing a FractionScaling a RecipeRecap: Fraction Stories5Equivalent Fractions
Same Amount, New NameSimplifying FractionsSimplify in StepsComparing FractionsRecap: Equivalent Fractions