Rounding/Estimation 3rd Grade

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting a number to the nearest specified place value, such as the nearest ten, hundred, or thousand.

Front

How do you round a number to the nearest hundred?

Back

To round a number to the nearest hundred, look at the tens digit. If it is 5 or greater, round up; if it is 4 or less, round down.

Front

Estimate the sum of 425 and 678 by rounding to the nearest hundred.

Back

Estimate: 400 + 700 = 1100.

Front

What is estimation in mathematics?

Back

Estimation is the process of finding an approximate value that is close enough to the right answer, often used for quick calculations.

Front

How can you estimate the total score of multiple rounds in a game?

Back

You can round each score to the nearest ten or hundred and then add the rounded numbers together.

Front

What is the estimated number of eggs if a chicken lays 263 eggs?

Back

The estimated number of eggs is 300.

Front

If a bus picks up 176 students in the morning and 84 in the afternoon, how can you estimate how many more students were picked up in the morning?

Back

Estimate: 200 (morning) - 100 (afternoon) = about 100 more students.

Front

What is the nearest hundred to the number 651?

Back

The nearest hundred to 651 is 700.

Front

What is the sum of 424 and 685 when rounded to the nearest hundred?

Back

The sum is 1100 when rounded to the nearest hundred.

Front

Why is rounding important in everyday life?

Back

Rounding helps simplify numbers, making them easier to work with in calculations and estimations.