In mathematics, estimating is a way of approximating an answer without using the exact values.

185 rounded to the nearest hundred is 200.

221 rounded to the nearest hundred is 200.

One way to estimate is to round each number to the nearest hundred.

384 rounds to 400.

287 rounds to 300.

298 rounds to 300.

So, approximately 1,000 people attended the first three showings of the play.