Unit 3 Lesson 15

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

How do you round a number to the nearest ten?

Back

To round a number to the nearest ten, 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 nearest ten to 106?

Back

The nearest ten to 106 is 110.

Front

What is the nearest hundred to 314?

Back

The nearest hundred to 314 is 300.

Front

What is an estimate?

Back

An estimate is a rough calculation or judgment of the value, number, quantity, or extent of something.

Front

If Tina estimates the distance to school as 0 miles, what does that mean?

Back

It means Tina thinks the school is very close to their house.

Front

If Tanya estimates the distance to the library as 10 miles, what does that mean?

Back

It means Tanya thinks the library is somewhat far from their house.

Front

What is the difference between an estimate and an exact measurement?

Back

An estimate is a rough calculation, while an exact measurement is a precise value.

Front

How do you determine who is correct when estimating?

Back

You compare the estimates to the actual distance and see which one is closer.

Front

What is the importance of estimating distances?

Back

Estimating distances helps us make quick decisions without needing exact measurements.