Study

Addition up to 20

  •   0%
  •  0     0     0

      Back   Restart
  • 14+1
    15
  • 4+10
    14
  • 13+3
    16
  • 15+4
    19
  • 6+7
    13
  • 13+2
    15
  • 4+6
    10
  • 9+7
    16
  • 13+5
    18
  • 10+10
    20
  • 16+4
    20
  • 5+12
    17
  • 5+8
    13
  • 3+11
    14
  • 9+4
    13
  • 8+9
    17
    • Your experience on this site will be improved by allowing cookies.