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.

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Presentation transcript:

basic advanced Is 2,481 divisible by 3? Explain. Is 34,917,000 divisible by 6? Explain Yes b/c = 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

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

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.

Example 1: So, 48 = 2 × 2 × 2 × 2 × 3 or, 2 4 × 3

Whiteboard time: So, 36 = 2 × 2 × 3 × 3 or, 2 2 × 3 2

So, 150 = 2 × 3 × 5 × 5 or, 2 × 3 × 5 2

So, 540 = 2 × 2 × 3 × 3 × 3 × 5 or, 2 2 × 3 3 × 5 25