| T | H | U | M | B |
| + | R | U | B | |
| S | M | A | R | T |
See more puzzles containing RUB, SMART or THUMB.
Would you like to see the solution?
The rules for cryptarithm puzzles are simple. Each letter represents one of the digits 0 to 9. Different letters represent different digits. The first digit in a number can't be 0. Your job is to find out what digit each letter represents. Can you solve the puzzle shown here?