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Mental Maths

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  • 12+11=
    23
  • 248+9=
    257
  • 3+8=
    11
  • 204+12=
    216
  • 101+4=
    105
  • 5+21=
    26
  • 500+101=
    601
  • 57+21=
    78
  • 31+3
    34
  • 303+8
    311
  • 456+90=
    546
  • 134+7
    141
  • 305+90=
    395
  • 11+8=
    19
  • 13+5=
    18
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