Question

Estimate each difference and sum to the nearest hundred:. (678 – 215) & (678+215)
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Answer 1

Answer:

Estimated value to the nearest hundreds of

678=700

Estimated value to the nearest hundreds of

215=200

∴ required estimation = $\text \red { (700−200)=500 }$

and $\text \red { (700+200) =900 }$