Is 'To Add' Separable or Inseparable? - Phrasal Verb Quiz

Quiz for Verb: 'To Add '

Is the phrasal verb 'To Add ' separable or inseparable in the following examples?

'Add up to' - Come to a certain amount or figure

'Add on' - Include in a calculation

'Add up' - Be a satisfactory explanantion for something

'Add up to' - Have a certain result

'Add up' - To make a mathematical total