1. 4-2 Equivalent Fractions Page 147

2. Vocabulary Words A Multiple- of a number is the product of the number and a nonzero whole number. Example: List the first 4 multiples of 5…. 5, 10, 15, 20

3. More Examples of Multiples List the four multiples of eight. List four multiples of eleven. 8,16,24,32 11,22,33,44

4. Your turn make up a problem for your partner. List the first four multiples of ________? Explain how you find multiples of a number.

5. Vocabulary Least Common Multiple (LCM) – of two numbers is the least number that is a multiple of both. Ex: Find the LCM of 3 and 4 Step one. List the multiples of 3.. 3, 6, 9, 12 Step 2: List the multiples of 4….. 4, 8, 12 Step 3: Find the smallest (least )number they have in common…in this case 12.

6. Find the LCM of 6 and 9. Multiples of 6: 12, 18, 24, 30, 36 Multiples of 9: 9, 18, 27, 36 The LCM of 6 and 9 is 18.

7. More examples: Find the LCM of each pair of numbers: #1. 4, 10 4, 8, 12, 16, 20, 24 10, 20 So the LCM of 4 and 10 is: 20 #2. 5,7 5, 10, 15, 20, 25, 30, 35 7, 14, 21, 28, 35 Answer is 35

8. Your turn What is the LCM of 12 and 15? What is the LCM of 6 and 10? Answers: 60 and 30

9. Vocabulary word A factor- is a whole number that divides another whole number with no remainder. Example: Find the factors of 30. **Find all the pairs of numbers with a product of 30. 1 x 30, 2x 15, 3 x 10, 5 x 6 The factors of 30 are: 1,2,3,5,6,10,15 and 30

10. Your turn Find the factors of 8. 1x4, 2 x 4 So the factors of 8 are: 1, 2, 4, and 8. Find the factors of 32. 1 x 32, 2 x 16, 4 x 8, Factors are: 1, 2, 4, 8, 16, and 32

11. Vocabulary Word Equivalent fractions: fractions that are equal. Example: ½ is equal to 5/10. You can find equivalent fractions by multiplying or dividing the numerator and denominator by the same number. 1 x 5 = 5 2 x 5 = 10

12. Your turn List three fractions that are equivalent to ¾ Possible Answers: 6/8, 9/12, 12/16.

13. What you learned today: Multiple LCM Factor Equivalent fractions

14. Assignment Book assignment: page 149-150 2-12 evens 18-30 evens 34-50 evens