Abe correctly rounded all of the values to the nearest ten to

estimate and then used a calculator to determine the exact

value of the expression.

542 - 360 = (472 - 442)

Which statements are true about Abe's estimated result

and calculated result for this expression? Check all that

apply

Abe's exact answer is 530.

Abe's estimated answer is 528.

0 Abe's exact answer is 528,

Abe shouldn't use a calculator on the first step (472-

442) because it is easily done using mental math.

The first step in evaluating the expression is to subtract

360 from 548