Rounding numbers using place value

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 up?

Back

Rounding up means increasing a number to the next highest place value. For example, 58 rounds up to 60.

Front

What does it mean to round down?

Back

Rounding down means decreasing a number to the next lowest place value. For example, 94 rounds down to 90.

Front

What is the place value of the digit 4 in the number 204?

Back

The place value of the digit 4 in 204 is 'zero' because it is in the tens place.

Front

What is the nearest ten to the number 23?

Back

The nearest ten to 23 is 20.

Front

How do you determine whether to round up or down?

Back

If the digit to the right of the place value you are rounding to is 5 or more, you round up. If it is 4 or less, you round down.

Front

What is the rounded value of 67?

Back

67 rounds to 70.

Front

If you have the number 82, what is it rounded to the nearest ten?

Back

82 rounds to 80.

Front

What is the rounded value of 145 to the nearest hundred?

Back

145 rounds to 100.

Front

If a number is exactly halfway between two rounding options, what do you do?

Back

You typically round up to the higher number.