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ELEMENTARY 3 LESSON 2

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  • 20+20+10=
    50
  • 10+5=
    15
  • 70+8=
    78
  • 20+30+40=
    90
  • 10+5+2=
    17
  • 5+8+3=
    19
  • 20+20=
    40
  • 10+5+2+2=
    19
  • 10+10=
    20
  • 10+5+2+1=
    18
  • 50+20+20=
    90
  • 20+10+5=
    35
  • 5+5+8=
    18
  • 50+20=
    70
  • 10+2=
    12
  • 17-10=
    7
  • 50+10=
    60
  • 10+20=
    30
  • 20+1=
    21
  • 50+10+20=
    80
  • 90+10=
    100
  • 20+20+50+10=
    100
  • 10+5+1=
    16
  • 10+4=
    14
  • 50+20=
    70
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