Rounding/Estimation 3rd Grade

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 thousand.

Front

What does it mean to round to the nearest hundred?

Back

Rounding to the nearest hundred means finding the closest multiple of 100 to a given number.

Front

How do you round the number 424 to the nearest hundred?

Back

424 rounds to 400 because it is closer to 400 than to 500.

Front

How do you round the number 685 to the nearest hundred?

Back

685 rounds to 700 because it is closer to 700 than to 600.

Front

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

Back

The sum is 1,100.

Front

What is estimation?

Back

Estimation is a way of finding an approximate value that is close to the exact amount.

Front

How can you estimate the difference between 176 and 84?

Back

You can round 176 to 200 and 84 to 100, then subtract: 200 - 100 = 100.

Front

What is the numeral 648 rounded to the nearest hundred?

Back

648 rounds to 600.

Front

If a point on a line is closer to 300 than to 400, what can you say about the amount represented?

Back

The amount is about 300 words.

Front

What is the rule for rounding numbers ending in 5?

Back

If a number ends in 5, round up to the next whole number.