Numerology Question in regards to figuring your expression number

[dreamsun8985]

If I have 2 last names given at birth do I treat these as separate entities or do I add them as one?

Example: If my name is Mary Anne Joseph-Jones

Should I add 3 or 4 single numbers together?  Should Joseph Jones be calculated as josephjones to render 3 single digits or joseph jones to render 4 single digits?

Thanks.

[Djehuty-M]

Add them to get FOUR single digit numbers (which are eventually added together for ONE single number giving you your DESTINY number, which reveals the role you may possibly play in the world, impacting it).

[dreamsun8985]

okay, thanks