The summing of the numbers is equal to 10.

Summing up, I think we should go with the alternative plan.

In sum, the project was a success.

The summings of the expenses were calculated.

The sums of money they spent on the vacation were astronomical.

My friend's last name is Sum.

He summed up the meeting in a few key points.

The MD5-summed file is corrupted.

The file has an md5-summed checksum.

The project was full-summed, with all the necessary components included.