Estimation of sums

Front

Estimating is to...

Back

find something close to the correct answer.

Front

Round 23 + 45 to the nearest ten.

Back

20 + 50 = 70.

Front

Estimate the sum of 13 + 28.

Back

40.

Front

What is the best estimate of the total number of books they read?

Back

200 books.

Front

Round 27 + 78 to the nearest ten, then estimate.

Back

110.

Front

What does 'estimate' mean in math?

Back

To find an approximate value.

Front

How do you round 45 to the nearest ten?

Back

Round up to 50.

Front

What is the estimated sum of 34 + 56?

Back

90.

Front

If you round 89 to the nearest ten, what do you get?

Back

90.

Front

What is the estimated sum of 12 + 19?

Back

30.