Double Digit Addition

Front

What is double digit addition?

Back

Double digit addition is the process of adding two numbers that each have two digits, such as 23 + 45.

Front

What are partial sums?

Back

Partial sums are the sums of parts of a number that help in adding larger numbers. For example, in 45 + 11, you can break it into 45 + 10 + 1.

Front

How do you break apart numbers for addition?

Back

You can break apart numbers by separating them into tens and ones. For example, 56 can be broken into 50 and 6.

Front

What is the sum of 70 + 10 + 6?

Back

The sum is 86.

Front

What is 45 + 11?

Back

The answer is 56.

Front

What is 45 + 4?

Back

The answer is 49.

Front

What is 10 + 32?

Back

The answer is 42.

Front

What are the partial sums of 20 + 13?

Back

The partial sums are 20 and 13.

Front

If you add 30 + 20, what is the result?

Back

The result is 50.

Front

What is the first step in double digit addition?

Back

The first step is to align the numbers by their place values.