Four digit Addition and Subtraction Problem

Front

What is the process of adding two four-digit numbers called?

Back

Addition

Front

What is the process of subtracting one four-digit number from another called?

Back

Subtraction

Front

What is the sum of 4,169 and 4,639?

Back

8,808

Front

What is the difference when 4,639 is subtracted from 8,416?

Back

3,777

Front

What is the result of adding 1,048 and 2,438?

Back

3,486

Front

How do you align numbers for addition?

Back

Align the numbers by their rightmost digits.

Front

How do you align numbers for subtraction?

Back

Align the numbers by their rightmost digits.

Front

What is a common mistake when adding four-digit numbers?

Back

Forgetting to carry over when the sum exceeds 9.

Front

What is a common mistake when subtracting four-digit numbers?

Back

Borrowing incorrectly from the next column.

Front

What is the maximum possible sum of two four-digit numbers?

Back

19,998 (9,999 + 9,999).