Rounding & Estimation PRACTICE

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, usually to the nearest ten, hundred, or other place value.

Front

What does it mean to estimate?

Back

Estimating means making a close guess about a number or amount, often using rounding to simplify calculations.

Front

How do you round a number to the nearest ten?

Back

Look at the digit in the ones place. If it is 5 or more, round up. If it is 4 or less, round down.

Front

What is the estimated total of 265, 312, and 274 when rounded to the nearest hundred?

Back

300 + 300 + 300 = 900.

Front

How do you find the difference between two numbers using estimation?

Back

Round both numbers to the nearest ten or hundred, then subtract the smaller rounded number from the larger rounded number.

Front

Estimate how many more seats the home side has than the visitor side if there are 799 and 515 seats respectively.

Back

800 - 500 = 300.

Front

What is the estimated number of people left on a bus with 75 people after 14 get off?

Back

75 - 14 is estimated as 70.

Front

If Mrs. Nicholson walked 12, 19, and 16 times over three days, what is the best estimate of her total walks?

Back

12 + 19 + 16 is estimated as 50.

Front

What is the purpose of using estimation in math?

Back

Estimation helps to quickly find an approximate answer without needing exact calculations.

Front

When rounding 598 to the nearest hundred, what is the result?

Back

600.