You used  the term interest "earned", but was the interest credited and paid in 2018?   Your bank should have given you a 1099-INT if they actually paid interest into the CDs in 2018.  It might be considered paid even though you choose to have it accumulate with the CD and didn't withdraw the credited interest.   If you didn't receive a 1099-INT, you may have to ask your bank if it's not clear whether you actually received "credited and paid interest" or not.

I checked with the bank and they stated that none of the 3 CDs made $10.00 or more, so thats why I didnt get a 1099 for them.  Also stated that I didnt have to report the interest earned.  Its only $15.00 for the three combined

@cdl241
I added another couple of sentences above, that his answer assumes you are otherwise required to file a return.  You didn't specifically say, but I assume you are preparing a return because you need to for other reasons.