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 345, the 3 is in the hundreds place, so its value is 300.

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler but still close to its original value. For example, rounding 47 to the nearest ten gives you 50.

Front

What is the standard form of a number?

Back

The standard form of a number is the way we usually write numbers using digits. For example, the standard form of 1,000 + 300 + 90 + 9 is 1,399.

Front

What is the word form of the number 482?

Back

The word form of 482 is 'four hundred eighty-two'.

Front

How do you compare two numbers?

Back

To compare two numbers, look at their place values from left to right. The number with the larger digit in the highest place value is greater.

Front

What is the value of the digit 7 in the number 7,245?

Back

The value of the digit 7 in the number 7,245 is 7,000 because it is in the thousands place.

Front

What does it mean if a number is less than another number?

Back

If a number is less than another number, it means it has a smaller value. For example, 3 is less than 5.

Front

What is the place value of the digit 6 in the number 1,256?

Back

The place value of the digit 6 in the number 1,256 is 'tens', and its value is 60.

Front

What is the difference between standard form and expanded form?

Back

Standard form is writing a number using digits, while expanded form breaks the number down into the sum of its place values. For example, 234 in expanded form is 200 + 30 + 4.

Front

How do you round the number 68 to the nearest ten?

Back

To round 68 to the nearest ten, look at the digit in the ones place (8). Since it is 5 or more, round up to 70.