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PRIME FACTORS

PRIME FACTORS. PRIME. FACTORS. PRIME NUMBERS. 2 3 5 7 11 13 17 19 23 29. PRIME. FACTORS. WHAT ARE FACTORS?. NUMBERS THAT DIVIDE INTO OTHER NUMBERS EXACTLY. WHAT ARE PRIME FACTORS?. FACTORS THAT ARE PRIME NUMBERS. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS.

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PRIME FACTORS

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  1. PRIME FACTORS

  2. PRIME FACTORS

  3. PRIME NUMBERS 2 3 5 7 11 13 17 19 23 29

  4. PRIME FACTORS

  5. WHAT ARE FACTORS? NUMBERS THAT DIVIDE INTO OTHER NUMBERS EXACTLY

  6. WHAT ARE PRIME FACTORS? FACTORS THAT ARE PRIME NUMBERS

  7. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS IS 30 AN EVEN NUMBER? YES DIVIDE IT BY 2

  8. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS 2 30 15 THE FIRST PRIME FACTOR

  9. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS IS 15 AN EVEN NUMBER? NO

  10. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS IS 15 A PRIME NUMBER? NO

  11. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS WILL 15 DIVIDE BY 3? YES

  12. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS 2 30 3 15 5 THE SECOND PRIME FACTOR

  13. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS IS 5 AN EVEN NUMBER? NO

  14. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS IS 5 A PRIME NUMBER? YES ALL THE PRIME FACTORS HAVE BEEN FOUND

  15. WRITE 30 AS A PRODUCT OF ITS PRIME FACTORS 30 = 2 x 3 x 5

  16. WRITE 180 AS A PRODUCT OF ITS PRIME FACTORS 2 180 2 90 3 45 3 15 5 180 = 2 x 2 x 3 x 3 x 5 PRACTICE

  17. Greatest COMMON FACTOR

  18. FIND THE GCF OF 120 AND 180 • Find the prime factors of each number 120 = 2 x 2 x 2 x 3 x 5 2. Find the prime factors that are common 180 = 2 x 2 x 3 x 3 x 5 3. Work out the GCF HCF = 2 x 2 x 3 x 5 = 60 PRACTICE

  19. Least COMMON MULTIPLE

  20. FIND THE LCM OF 36 AND 56 • Find the prime factors of each number 36 = 2 x 2 x 3 x 3 2. Write down the first set of factors again 56 = 2 x 2 x 2 x 7 x 2 x 7 2 x 2 x 3 x 3 2 and 7 are missing 2 and 7 are missing LCM = 504 3. Check each factor of the second set is in the LCM – if not add them PRACTICE

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