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“Whatever”

Adding & Subtracting Rational Numbers , p74. Simplify . √ 64 = < √ 81 = < √ 100 = 2. 2.8 × 100 = 3. Six laborers work 8 hours. How many man hours did they work? .

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“Whatever”

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

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

  3. 23 1 4 1. You have a board that is 2 ft. long, and need one 1 ft. long. How much should you cut off the board? 5 8 1 6 3 5 2 3 2. 3. 1 –2 + – 1 9 16 38 1 4.– n for n =

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

  5. Real Life: Applications 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? 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? 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. 2 9 5 9 – – 5. 0.3 + (–1.2)= 6. 17.2 – 4.39= 7. 0.4 + 2.2= 8. 12.4 – 3.29= 3 x 6 x + – 9. 10. 11. 12.1 – x for x = –0.1 12. 52.3 – y for y = –7.8

  7. 1 10 7 8 7 10 5 8 + m for m = 3 + m for m = 5 3 4 5 4 + – 13. 14. 15. –1.2 + 8.4 16. 2.5 + (–2.8) 18. 62.1 + x for x = –127.0 17. 19. Summarize a tip for adding and subtracting same denominator fractions: 20. Summarize a tip for adding and subtracting decimals: 2.3 RM & 2.3 SRp77 #43-53 even

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