4 digit addition & subtraction

Front

What is 4-digit addition?

Back

4-digit addition is the process of adding numbers that have four digits each, such as 1234 + 5678.

Front

What is 4-digit subtraction?

Back

4-digit subtraction is the process of subtracting one four-digit number from another, such as 8765 - 4321.

Front

How do you line up numbers for addition?

Back

When adding, line up the numbers by their place values: thousands, hundreds, tens, and ones.

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 column on the left.

Front

What is borrowing in subtraction?

Back

Borrowing is when you take 1 from the next left column to help subtract a larger digit from a smaller digit.

Front

Calculate: 2345 + 6789

Back

9134

Front

Calculate: 5000 - 1234

Back

3766

Front

What is the sum of 1000 and 2000?

Back

The sum is 3000.

Front

What is the difference between 4000 and 1500?

Back

The difference is 2500.

Front

What do you do if a column in addition has no number?

Back

If a column has no number, treat it as 0 when adding.