Seudónimo Seudónimo
  • 21-12-2016
  • Mathematics
contestada

explain why you should record a 1 in the tens when you regroup in an addition problem

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Аноним Аноним
  • 21-12-2016
you put a one becuse it  repusents a 10 and your tencly adding  a 10
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Yakeis Yakeis
  • 26-12-2016
You have to put the one first
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