Question

Estimate the outcome of the indicated number operation. Compare the estimation with exact outcome.

$1,021+2,788$

Answer 1

Step 1: Find the estimated outcome

The estimated outcome of $1021$ to the nearest thousand$1000$

The estimated outcome of $2788$ to the nearest thousand $3000$

So, Estimated outcome $1000+3000=4000$

Step 2: Find exact outcome and compare with estimated outcome

Exact outcome $=1,021+2,788=3,809$

Clearly, $4000>3809$

Hence, Estimated outcome is greater than the Exact outcome