khalid12345
khalid12345 khalid12345
  • 01-03-2016
  • Mathematics
contestada

explain how solve 8 + 2 can help you solve 80 + 20

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Аноним Аноним
  • 01-03-2016
8+2 is 10. 80+20 is 100. Since you added 2 zeros total, then the second sum will have two more zeros, etc.
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blooby blooby
  • 01-03-2016
Its helping you get use to adding smaller numbers that is equivalent to bigger numbers
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