What do I enter for value of all IRA"S on 12/31/2018 I inherited an IRA from my mother and received a 1099R for the first yearly distribution

[dmertz]

TurboTax is asking for the 2018 year end value of your own traditional IRAs.  Do not include the value of the inherited IRA.  Everything about the inherited IRA must be treated separately from your own IRAs.

Nowhere does TurboTax does ask for the value of an inherited IRA.  (Distributions from an inherited traditional IRA are reported with code 4 in box 7 of the Form 1099-R provided by the payer.)