Pyramid Puzzles

One of the tasks on our contracts this week is pyramid puzzles. The only clue we were given was that it was addition. In the pyramid is some numbers and then the rest of the spaces are blank. what we have to do is figure out what the numbers are in the blank by adding them together. Lets say there was a seven at the bottom of the pyramid and a sixteen in the next row above diagonal from the seven, you have to try and solve what seven plus something equals sixteen. Once you have found your answer you put it in the space that is also diagonal below the sixteen. Now that we have put the answer in we have to try and figure out another number that goes in the blank. But if there is no more numbers on the bottom move up to an equation that you can do. So lets say diagonally up from the sixteen is twenty one you have to now count how many more there is to get from sixteen to twenty one. Then when you have found the answer you put it in the other spot diagonally below the twenty one. Once you keep finding the answers it will give you more equations to solve until there is none left. Here is how my completed pyramid puzzles look.