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Warm-up November 20, 2013

Warm-up November 20, 2013. Copy Agenda message Copy EQ | 8 * 7 + 5 – 4 * 3 | = | - 7 – (-9) | = Y = │ - X │ + 14 – 3X Solve for Y when X = -7. Adding Integers. Same sign add and keep Different sign subtract Keep the sign of the larger number Then you’ll be exact

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Warm-up November 20, 2013

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  1. Warm-upNovember 20, 2013 • Copy Agenda message • Copy EQ • | 8 * 7 + 5 – 4 * 3 | = • | - 7 – (-9) | = • Y = │ - X │ + 14 – 3X Solve for Y when X = -7

  2. Adding Integers • Same sign add and keep • Different sign subtract • Keep the sign of the larger number • Then you’ll be exact (to the tune of row, row, row, your boat)

  3. Subtracting Integers • Change the problem to ADDITION. • (Keep, change, change) • Then use the rules of addition (the song!).

  4. Extra Credit – This is not class work • Jan is twice as old as Bob. • The sum of their ages is 5 times Bob’s age less 48. • How old are Jan and Bob?

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