Warm-Up Exploration 5.12 (p. 114) Continue working on Part I (we started this in class on the PowerPoint last week)

Exploration 5.12 Note: 7/13 ~ 1/2; 12/17 ~ 2/3 7/13 + 12/17 > 1 0 7/13 12/17 1 A B C D E Note: 7/13 ~ 1/2; 12/17 ~ 2/3 7/13 + 12/17 > 1 7/13 • 12/17 means less than 7/13 7/13 ÷ 12/17 means 7/13 • 17/12. This is like 1/2 • 3/2 = 3/4, which is greater than 12/17, so 12/17 ÷ 7/13 means 12/17 • 13/7. This is like 2/3 • 2/1 which is 4/3. So

More Practice Given: 4/9 + 2/11 4/9 - 2/11 4/9 • 2/11 4/9 ÷ 2/11 4/9 • 2/11 4/9 ÷ 2/11 2/11 is much less than 5/9, so D. 2/11 is less than 2/9, so C. 4/9 • 2/11 is less than both of these fractions, so B. 4/9 • 11/2 is much greater than 1, so E. 0 2/11 4/9 1 A B C D E

Exploration 5.13 #2 3/4 + 1/6 = 11/12 3/4 1/6

Exploration 5.13 #4 12 • 3/4 = 9 (Note: this is operator)

Exploration 5.13 #5 12 - 3/4 = 11 1/4

Add and subtract: find a common denominator. 3/8 + 5/12 2/15 - 1/20 LCD = 24 LCD = 60 3 • 3 + 5 • 2 2 • 4 - 1 • 3 8 • 3 12 • 2 15 • 4 20 • 3 9/24 + 10/24 8/60 - 3/60 19/24 5/60 or 1/12

The Area Model and Multiplication Use an area model to show 2/3 • 4/5

The Area Model and Multiplication Use an area model to show 2/3 • 4/5

The Area Model and Multiplication Use an area model to show 4/5 • 1 2/3 Multiplication is