Video: Factors & Multiples




Determine factor pairs for a whole number from 0 to 144.

Determine whether a whole number from 0 to 144 is prime, composite or neither.

  • A factor is a number that evenly divides another number.
  • Factors can be thought of in terms of "factor pairs," or numbers that multiply together to make a target number.
  • Factors of 12: 1, 2, 3, 4, 6, 12

    Factor pairs of 12: 1 and 12; 2 and 6; 3 and 4

  • The result of multiplying a certain number by a whole number
  • Can also be thought of as “counting by” that number, i.e., counting by 5s will give you a list of multiples of 5
  • Multiples of 5: 5, 10, 15, 20..... 105, 110, 115....

    A list of multiples is infinite.