Sarsora Sarsora
  • 21-10-2014
  • Mathematics
contestada

How do you estimate 403,446 +396,755

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ZackFry
ZackFry ZackFry
  • 21-10-2014
403446 is around 400000 so you round that up in your head.  396755 is close to 400000 so you round that up in your head to.  Then you add them together to get 800000, which you can do in your head. 
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elwira123
elwira123 elwira123
  • 21-10-2014
you round both numbers to 1 significant figure. So you do 400,000 + 400,000 = 800,000
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