Rounding

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 round to the nearest ten?

Back

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

Front

What are benchmark numbers?

Back

Benchmark numbers are the numbers used as reference points when rounding, such as 30 and 40 when rounding 37 to the nearest ten.

Front

Round 37 to the nearest ten.

Back

40

Front

Round 278 to the nearest hundred.

Back

300

Front

How do you round a number?

Back

Look at the digit to the right of the place value you are rounding to. If it is 5 or more, round up. If it is less than 5, round down.

Front

What is the nearest hundred to 243?

Back

200

Front

Round 32 to the nearest ten.

Back

30

Front

Round 67 to the nearest ten.

Back

70

Front

If you have 243 third graders and 179 second graders, how do you find the total number of students rounded to the nearest hundred?

Back

Add 243 and 179 to get 422, then round to 400.