Place Value and Rounding

Front

What is place value?

Back

Place value is the value of a digit based on its position in a number. For example, in the number 4,562, the digit 5 is in the hundreds place, so its value is 500.

Front

How do you write a number in expanded form?

Back

To write a number in expanded form, break it down into the sum of each digit multiplied by its place value. For example, 8,421 = 8,000 + 400 + 20 + 1.

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified place value, such as the nearest ten, hundred, or thousand.

Front

How do you round 7,654 to the nearest hundred?

Back

Look at the tens place (5). Since it is 5 or more, round up to 7,700.

Front

What is the standard form of a number?

Back

Standard form is the way of writing numbers using digits. For example, sixty-two thousand four hundred thirty-one is written as 62,431.

Front

What is the difference between standard form and expanded form?

Back

Standard form uses digits to represent a number, while expanded form breaks the number down into the sum of its place values.

Front

How do you identify the nearest number on a number line?

Back

To identify the nearest number on a number line, find the closest whole number to the plotted point.

Front

What is the value of the digit 2 in the number 2,405?

Back

In the number 2,405, the digit 2 is in the thousands place, so its value is 2,000.

Front

What is rounding to the nearest ten?

Back

Rounding to the nearest ten means looking at the ones place. If it is 5 or more, round up; if it is 4 or less, round down.

Front

How do you write 5,775 in expanded form?

Back

5,775 = 5,000 + 700 + 70 + 5.