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Fill in the missing numbers in the factor trees then write the prime factorization (the first one is done for you):  



Prime Factorization: 2 x 2 x 3

Prime Factorization: 2 x 2 x 2 x 2 x 3  



Prime Factorization: 2 x 2 x 3 x 5

Prime Factorization: 2 x 2 x 2 x 2 x 3  



Prime Factorization: 2 x 2 x 2 x 2 x 5

Prime Factorization: 2 x 2 x 5 x 5 
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The various resources listed below are aligned to the same standard, (6NS04) taken from the CCSM (Common Core Standards For Mathematics) as the Factors and multiples Worksheet shown above.
Find the greatest common factor of two whole numbers less than or equal to 100 and the least common multiple of two whole numbers less than or equal to 12. Use the distributive property to express a sum of two whole numbers 1100 with a common factor as a multiple of a sum of two whole numbers with no common factor. For example, express 36 + 8 as 4 (9 + 2). Apply and extend previous understandings of numbers to the system of rational numbers.
Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:
Compute fluently with multidigit numbers and find common factors and multiples