4.1 Factors and Multiples

Unit Goals

  • Students apply understanding of multiplication and area to work with factors and multiples.

Section A Goals

  • Determine if a number is prime or composite.
  • Explain what it means to be a factor or a multiple of a whole number.
  • Relate the side lengths and area of a rectangle to factors and multiples.

Section B Goals

  • Apply multiplication fluency within 100 and the relationship between multiplication and division to find factor pairs and multiples.
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Glossary Entries

  • composite number
    A whole number with more than 1 factor pair.

  • factor pair of a whole number
    A pair of whole numbers that multiply to result in that number. For example, 5 and 4 are a factor pair of 20.

  • multiple of a number
    The result of multiplying that number by a whole number. For example, 18 is a multiple of 3, because it is a result of multiplying 3 by 6.

  • prime number
    A whole number that is greater than 1 and has exactly one factor pair: the number itself and 1.