Three-Digit Addition

Three-digit addition is the process of adding numbers that have three digits, which can range from 100 to 999.

507

858

785

991

658

Align the numbers by place value (hundreds, tens, and units) and add each column starting from the right.

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

Place value is the value of a digit based on its position in a number, such as hundreds, tens, or units.

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