• To add on a number line, count on.
  • 0 + 4 = 4
  • 1 + 6 = 7
  • 1 + 4 = 5
  • 1 + 5 = 6
  • Start at 1 and count on 4. The result is 5.
  • The addition number sentence is:
  • 1+4=5
  • 2 + 6 = 8
  • 1 + 3 = 4
  • 2 + 3 = 5
  • 2 + 4 = 6
  • Start at 2 and count on 3. The result is 5
  • The addition number sentence is:
  • 2+3=5
  • 0 + 1 = 1
  • 1 + 2 = 3
  • 1 + 3 = 4
  • 1 + 1 = 2
  • Start at 1 and count on 1. The result is 2.
  • The addition number sentence is:
  • 1+1=2