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Cornell Notes #1A

Cornell Notes #1A. Multiplying and Dividing Integers. Review: Adding and Subtracting Integers . Integers 1, -2, ½ , ¾, - ½ Adding same sign -1 + -2 = -3 Add Keep sign Different signs 1 + -2 = -1 Subtract Take sign of

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Cornell Notes #1A

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  1. Cornell Notes#1A Multiplying and Dividing Integers

  2. Review: Adding and Subtracting Integers • Integers 1, -2, ½ , ¾, - ½ • Adding • same sign -1 + -2 = -3 • Add • Keep sign • Different signs 1 + -2 = -1 • Subtract • Take sign of • Larger #

  3. Review: Adding and Subtracting Integers • Integers 1, -2, ½ , ¾, - ½ • Subtracting -3 - +3=-6 • SCC the signs -3 + -3 = • Now the signs • Same add and keep the sign (3 +3) and – sign = -6 • Subtracting - 5 - -4= -1 • SCC the signs -5 + +4= -1 • Now the signs • Different subtract (5-4) and take the sign of the larger number (-5), so -1

  4. Review: Multiplying Integers • Multiplying Integers Example: 5 (-3)=-15 • Cover • 2 signs you’re using • +and - • Sign left uncovered • is the sign of the answer

  5. Review: Dividing Integers • Dividing Integers Example: -15 ÷ -3=5 • Cover • 2 signs you’re using • - and - • Sign left uncovered • is the sign of the answer • Same as multiplication

  6. Guided Practice • -6-6= • Notes: Subtraction • SCC -6 + -6 • Signs same • Add, keep sign • -6+6= • Notes: Adding • Signs different • Subtract, take sign of larger number • -6 ÷ -2= • Use “Multiply/Division Man” • Cover what you have – and – • Sign of answer is sign that is still uncovered

  7. USE YOUR NOTES to solve these equations (5 minutes) show work • +12 +-12= • -12 - - 12= • +12 - +12 • -12 + -12= • -12 - +12= • -12 + +12= • -2 (-3)= • 6 ÷ -3= • 2 (-2)=

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