arilyn arilyn
  • 18-09-2014
  • Mathematics
contestada

use the rounding or compatible numbers to estimate the sum.
87+34=121 we got 90+30= 110

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danieltaylor97
danieltaylor97 danieltaylor97
  • 18-09-2014
90 + 30 =120, you were close but 121 doesn't round to 110.
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