Factors and Multiples
- Prime Numbers Read my notes below.
- A prime number can’t be divided evenly (no remainder) by any number except itself and the number 1. Example: 7/7=1, 7/1=7 You can’t divide 7 evenly by any number other than itself and 1.
- If it is even, then you can divide it by 2.
- If it ends in 5, then you can divide it by 5.
- If you can add up the digits and divide the sum by 3 or 9, then you can divide the whole number by 3 or 9. Example 69: 6 + 9 = 15 You can divide 15 by 3 so you can divide 69 by 3.
- Recognizing Prime Numbers Complete the exercise.
- Recognizing Divisibility Common Divisibility Examples Complete the exercise “Divisibility Tests.”
- Divisibility Intuition Complete the exercise.
- Finding Factors of a Number Complete the exercise “Divisibility.”
- Prime Factorization and Prime Factorization Exercise Complete the exercise.
- Least Common Multiple (LCM) Do NOT do the exercise on the video page. Complete the exercise “Least Common Multiple.”
- Greatest Common Divisor Do NOT do the exercise on the video page. Complete the exercise “Greatest Common Divisor.”
- Complete the “LCM and GCD word problems.” Pause the video. Read the problem and solve. Then watch the solution. Repeat for each problem.
- The fundamental theorem of arithmetic Complete the exercise.
