1. 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

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

3. 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.

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

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

6. 150 15 10 35 25 So, 150 = 2 × 3 × 5 × 5 or, 2 × 3 × 5 2

7. 540 1 0 54 2 27 39 33 So, 540 = 2 × 2 × 3 × 3 × 3 × 5 or, 2 2 × 3 3 × 5 25