Addition and subtraction – ways to make a number – up to 100

Learn with an example

  • 73 + 27
  • 100 − 1
  • 4 + 94
  • 49 + 50
  • This is a way to make 100:
  • 73 + 27 = 100
  • These are not ways to make 100:
  • 100 − 1 = 99
    4 + 94 = 98
    49 + 50 = 99
  • 92 + 1
  • 9 + 83
  • 96 − 3
  • 8 + 85
  • This is not a way to make 93:
  • 9 + 83 = 92
  • These are ways to make 93:
  • 92 + 1 = 93
    96 − 3 = 93
    8 + 85 = 93
  • 32 − 1
  • 11 + 30
  • 41 − 0
  • 15 + 26
  • This is not a way to make 41:
  • 32 − 1 = 31
  • These are ways to make 41:
  • 11 + 30 = 41
    41 − 0 = 41
    15 + 26 = 41

Let’s practice!🖊️