0+0=0

Yes. 0 + 0 = 0.

Reason: 0 is the additive identity, meaning a + 0 = a for any number a. Setting a = 0 gives 0 + 0 = 0.

If you want, I can give quick related problems (like 5 + 0, or 0 + (-7)) or explain the additive identity in more depth.