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Integers Review: Adding, Subtracting, Multiplying, and Dividing

Learn how to add, subtract, multiply, and divide integers with clear examples and guided practice. Master the rules of signs and calculations easily. Enhance your math skills! Use Cornell Notes.

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Integers Review: Adding, Subtracting, Multiplying, and Dividing

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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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