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**Warm-Up Exploration 5.12 (p. 114) Continue working on Part I**

(we started this in class on the PowerPoint last week)

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**Exploration 5.12 Note: 7/13 ~ 1/2; 12/17 ~ 2/3 7/13 + 12/17 > 1**

/ / A B C D E Note: 7/13 ~ 1/2; 12/17 ~ 2/3 7/ /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

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**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. / / A B C D E

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

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

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

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**Add and subtract: find a common denominator.**

3/8 + 5/ /15 - 1/20 LCD = 24 LCD = 60 3 • • • • 3 8 • • • • 3 9/ /24 8/60 - 3/60 19/ /60 or 1/12

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**The Area Model and Multiplication**

Use an area model to show 2/3 • 4/5

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**The Area Model and Multiplication**

Use an area model to show 2/3 • 4/5

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**The Area Model and Multiplication**

Use an area model to show 4/5 • 1 2/3 Multiplication is

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