2 24 Adding & Subtracting Fractions With Unlike Denominators
1. Adding & Subtracting Fractions with unlike denominators 12/8/09 EQ: How do I add & subtract fractions when the denominator is different? 12/8/2009 1 Bitsy Griffin Lessons 2-24 & 25
2. Review: How do you add fractions with the same denominator? 12/8/2009 2 Bitsy Griffin Lessons 2-24 & 25
3. Problem 1: Eleni ate ¼ box of cereal. Freddie ate 3/8 box of the same box of cereal. 12/8/2009 3 Bitsy Griffin Lessons 2-24 & 25
4. Problem 1: What portion of the box did they eat in all? 12/8/2009 4 Bitsy Griffin Lessons 2-24 & 25
5. Problem 1: What needs to happen to add these 2 fractions? Need same denominator. 12/8/2009 5 Bitsy Griffin Lessons 2-24 & 25
6. Problem 1: Need same denominator. Least Common Denominator LCD 12/8/2009 6 Bitsy Griffin Lessons 2-24 & 25
7. Problem 1: How can we get the same denominator? ¼ = 2/8 12/8/2009 7 Bitsy Griffin Lessons 2-24 & 25
8. Problem 1: 2/8 + 3/8 = 5/8 Can it be simplified? 12/8/2009 8 Bitsy Griffin Lessons 2-24 & 25
9. Problem 1: How much more did Freddie eat? 3/8 - 2/8 = 1/8 Can it be simplified? 12/8/2009 9 Bitsy Griffin Lessons 2-24 & 25
10. Problem 2: How would we solve: ¼ + 2/3 Common denominator is? 12 12/8/2009 10 Bitsy Griffin Lessons 2-24 & 25