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Published byIrene Smith Modified over 7 years ago

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basic advanced Is 2,481 divisible by 3? Explain. Is 34,917,000 divisible by 6? Explain Yes b/c 2+4+8+1= 15. And 15 is divisible by 3. Yes b/c it ends in an even number (divisible by 2), and adds up to 24 (divisible by 3). PODPOD

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Prime Factorization Factors are the numbers you multiply together to get another number: 2 × 3 = 6 factor

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Prime Factorization is finding which prime numbers multiply together to make the original number. To find the prime factors of a number create a factor tree.

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Example 1: 48 2 24 2 12 26 23 So, 48 = 2 × 2 × 2 × 2 × 3 or, 2 4 × 3

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Whiteboard time: 36 2 18 2 9 33 So, 36 = 2 × 2 × 3 × 3 or, 2 2 × 3 2

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150 15 10 35 25 So, 150 = 2 × 3 × 5 × 5 or, 2 × 3 × 5 2

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540 1 0 54 2 27 39 33 So, 540 = 2 × 2 × 3 × 3 × 3 × 5 or, 2 2 × 3 3 × 5 25

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