1. LO: I will simplify addition & subtraction of rational numbers using strategies, skills & concepts. “Whatever” Convert mixed numbers into improper fractions. Rewrite using a common denominator. Use GEMDAS Simplify using properties of fractions Simplify. 1.√ 64 = < √ 81 =< √ 100 = 2. 2.8 × 100 = 3. Six laborers work 8 hours. How many man hours did they work? Adding & Subtracting Rational Numbers, p74

2. 1 + – 1. 2525 2. 7 12 3 – (-2 ) 3. -6.5 + (–1.2) 4. -3.4 – 0.9 3535 11 12 Write each decimal as a fraction in simplest form. 4. 1.15 = = 5. – 0.22 = = 1 3 – 11 1 100 – 100 Decimals-__________ PLACE VALUE, then ADD/SUBTRACT to solve. Fractions-SAME DENOMINATOR, Just ADD/SUBTRACT the ________________, then SIMPLIFY to solve.

3. 2. –2 + 3535 2323 4. – n for n = 1 3838 9 16 – 1 1 1616 5858 3. 1414 2323 1. You have a board that is 2 ft. long, and need one 1 ft. long. How much should you cut off the board?

4. 12. Evaluate the perimeter of the isosceles triangle. 2.6 RM & 2.6 SRp91 #54-62 even 11. Calculate a 2x8 board’s dimensional perimeter.

5. Real Life: Applications 2. Claire swam the 100-meter butterfly in 33.42 seconds last year. This year she improved her time by 2.3 seconds. How fast did Claire swim the 100- meter fly this year? 1. Ugo’s doctor measured him to be 0.84 meter tall at his most recent checkup, and was amazed that just a few months earlier, Ugo was only 0.6 meters in height. How much has Ugo grown in the past few months? 3. First class postage in the United States costs $0.45 for 1 oz. Your letter weighs ¾ oz. Do you need extra postage to include a newspaper clipping that weighs 3/8 oz.? Explain your reasoning. 4. Last Friday Steve baked a pizza using 6 ¾ oz. of prosciutto. Today he’s going to make a pizza using 8 ¼ oz. of prosciutto. How much more meat is left in the 16 oz. package?

6. 5. 0.3 + (–1.2)=6. 17.2 – 4.39= 7. 0.4 + 2.2= 8. 12.4 – 3.29= 2929 –– 5959 6x6x + – 3x3x 9. 10. 11. 12.1 – x for x = –0.112. 52.3 – y for y = –7.8

7. + m for m = 3 7 10 1 10 + m for m = 5 5858 7878 15. –1.2 + 8.416. 2.5 + (–2.8) 17. 18. 62.1 + x for x = –127.0 3434 + 5454 – 14. 13. 2.3 RM & 2.3 SRp77 #43-53 even 19. Summarize a tip for adding and subtracting same denominator fractions: 20. Summarize a tip for adding and subtracting decimals: