Ways to make a number using subtraction

Learn with an example

👉 Select all of the ways to make 17.

  • These are ways to make 17:
    • 17 − 0 = 17
    • 20 − 3 = 17
  • These are not ways to make 17:
    • 18 − 2 = 16
    • 17 − 1 = 16

👉 Which is not a way to make 10?

  • 11 -2
  • 19 – 9
  • 14 – 4
  • 17 – 7
  • This is not a way to make 10:
    • 11 − 2 = 9
  • These are ways to make 10:
    • 19 − 9 = 10
    • 14 − 4 = 10
    • 17 − 7 = 10

👉 Which is not a way to make 7?

  • This is not a way to make 7:
    • 20 − 15 = 5
  • These are ways to make 7:
    • 17 − 10 = 7
    • 14 − 7 = 7
    • 20 − 13 = 7

Let’s practice!🖋️