2. Round to the nearest tens place and then estimate the sum.

262 + 523

A 785

B 780

C 790

D 800

I Would Say The Answer Is B.

To round to the nearest tens place, look at he value of t he ones. If the ones is a 5 or higher you round the tens value up, if the ones is under 5, the tens value stays the same.

262, the ones is a 2, so the tens stays the same = 260

523, the ones is a 3, so the tens stays the same = 520

Now add: 260 + 520 = 780

The answer is B. 780