Add a Column of Numbers - Arithmetic Step by Step

Add three numbers (25 + 38 + 14) by summing each place column from right to left, carrying when the column total reaches 10 or more.

Example

add-col-25-38-14.math

   25
   38
+  14
-----

step: ones: 5 + 8 + 4 = 17 -> write 7, carry 1
step: tens: 2 + 3 + 1 + carry 1 = 7 -> write 7
step: 25 + 38 + 14 = 77

column-sum When adding three or more numbers, sum all digits in each place column from right to left. Apply the same carry rule: if the column total is 10 or more, write the ones digit and carry the rest to the next column.