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Finger Math Practice - 10s

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  • 40-20+50-70+10+30-40=
    0
  • 20+20-40+10+50=
    60
  • 90-40-50+10+10+50=
    70
  • 60+30-70+20+50-30=
    60
  • 90-40-50+10+20+50=
    80
  • 50+30-20-60+80=
    80
  • 20+10+50-0-20-50+60=
    70
  • 80-50+60-30+20-0=
    80
  • 40+50-20-60+70-60=
    20
  • 70-50+20-40+50=
    50
  • 20+20+50-30-10=
    50
  • 90-40-50+10+10+20=
    40
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