Add Two-Digit Numbers With Carrying - Arithmetic Step by Step

Add 47 + 38 column by column. The ones sum (7 + 8 = 15) is 10 or more, so write the 5 and carry the 1 to the tens column.

Example

add-47-38.math

   47
+  38
-----

step: ones: 7 + 8 = 15, write 5, carry 1
step: tens: 4 + 3 + carry 1 = 8 -> write 8
step: 47 + 38 = 85

carry When a column sum reaches 10 or more, write only the ones digit and carry the tens digit to the next column on the left. The carry adds 1 to that column's sum.