Grouping Data From Similar Fields

I have a set of data that looks like this:

A | B | C | D
---------------
100 | 2 | 0 | 0
100 | 0 | 0 | 7
100 | 6 | 0 | 0
101 | 8 | 0 | 0
101 | 0 | 5 | 0
101 | 0 | 0 | 1

Column A is a 'User Number' and columns B-D contain values.

I was hoping to use this data to create a new range where each 'User Number' only has one row, and the values in the other columns are summed for each user.

This would ideally look like this:

A | B | C | D
---------------
100 | 8 | 0 | 7
101 | 8 | 5 | 1