Double Digit Addition

Front

What is double digit addition?

Back

Double digit addition refers to the process of adding two numbers that each have two digits, resulting in a sum that can be either a two-digit or a three-digit number.

Front

How do you add two double-digit numbers?

Back

To add two double-digit numbers, align the numbers vertically by place value (tens and ones), add the ones column first, carry over if necessary, and then add the tens column.

Front

What is the sum of 26 and 54?

Back

The sum of 26 and 54 is 80.

Front

What is the sum of 53 and 29?

Back

The sum of 53 and 29 is 82.

Front

What is the sum of 65 and 27?

Back

The sum of 65 and 27 is 92.

Front

What is the sum of 38 and 42?

Back

The sum of 38 and 42 is 80.

Front

What is the sum of 17 and 24?

Back

The sum of 17 and 24 is 41.

Front

What is carrying in addition?

Back

Carrying in addition is the process of transferring a value from one column to the next when the sum of that column exceeds the base value (10 in base-10 addition).

Front

What is the importance of place value in addition?

Back

Place value is important in addition because it helps to correctly align numbers by their tens and ones, ensuring accurate calculations.

Front

How can you check your addition?

Back

You can check your addition by using the inverse operation (subtraction) to see if subtracting one of the addends from the sum gives you the other addend.