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Study Guides > Prealgebra

Summary: Multiplying and Dividing Integers

Key Concepts

  • Multiplication of Signed Numbers
    • To determine the sign of the product of two signed numbers:
      Same Signs Product
      Two positives Two negatives Positive Positive
      Different Signs Product
      Positive • negative Negative • positive Negative Negative
  • Division of Signed Numbers
    • To determine the sign of the quotient of two signed numbers:
      Same Signs Quotient
      Two positives Two negatives Positive Positive
      Different Signs Quotient
      Positive • negative Negative • Positive Negative Negative
  • Multiplication by [latex]-1[/latex]
    • Multiplying a number by [latex]-1[/latex] gives its opposite: [latex]-1(a)=-a[/latex]
  • Division by [latex]-1[/latex]
    • Dividing a number by [latex]-1[/latex] gives its opposite: [latex]a\div(-1)=-a[/latex]
ACCESS ADDITIONAL ONLINE RESOURCES
  • Multiplying Integers Using Color Counters
  • Multiplying Integers Using Color Counters With Neutral Pairs
  • Multiplying Integers Basics
  • Dividing Integers Basics
  • Ex. Dividing Integers
  • Multiplying and Dividing Signed Numbers

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