3 Digit Addition

Front

What is 3-digit addition?

Back

3-digit addition is the process of adding numbers that have three digits, such as 123 + 456.

Front

What is the place value of the digit 5 in the number 582?

Back

In the number 582, the digit 5 is in the hundreds place, which means it represents 500.

Front

How do you add numbers in the hundreds place?

Back

To add numbers in the hundreds place, you add the digits in the hundreds column and carry over if the sum is 10 or more.

Front

What is carrying in addition?

Back

Carrying is when the sum of a column exceeds 9, and you move the extra value to the next left column.

Front

What is the sum of 245 and 378?

Back

The sum of 245 and 378 is 623.

Front

What do you do if the sum of the digits in a column is more than 9?

Back

If the sum is more than 9, write down the last digit and carry over the first digit to the next column.

Front

What is the first step in adding 3-digit numbers?

Back

The first step is to line up the numbers by their place values: hundreds, tens, and ones.

Front

What is the sum of 100 and 200?

Back

The sum of 100 and 200 is 300.

Front

What is the tens place in the number 456?

Back

In the number 456, the tens place is occupied by the digit 5, which represents 50.

Front

How do you check your addition?

Back

You can check your addition by adding the numbers again or by using subtraction to see if the difference matches.