Study

Estimating Sums and Differences

  •   0%
  •  0     0     0

      Back   Restart
  • 45+89=
    140
  • 15+72
    90
  • 27+34=
    60
  • 93-34=
    60
  • 44-23=
    20
  • 81-42=
    40
  • 99-43=
    60
  • 17-11=
    10
  • 59+31=
    90
  • 46-19=
    30
  • 24+11=
    30
  • 34+54=
    80
  • 62-14=
    50
  • 60-33=
    30
  • 72-55=
    10
  • 92+43
    130
  • 56+43=
    100
    • Your experience on this site will be improved by allowing cookies.