That's a good UEB question.
Let's see, you're transcribing using only UEB, and you have a series or list of equations, which are going to need a lot of "grade one-ifying," would it be appropriate to put all of them within one big grade 1 passage?
Yes. It would be appropriate and right to put on the line before the series or list of equations a grade 1 passage indicator (preceded by the dot locator for "use") and to put on the line after the series a grade 1 terminator (preceded by the dot locator for "use").
When you do this, please keep in mind that even within a grade 1 passage, a grade 1 symbol indicator will still be required before an upper-cell, lowercase letter (a-j) that follows immediately after a number.
As always, please do let me know if you have follow-up or clarification questions.
Additionally, you may be interested in NBA's upcoming 4-part webinar on Using UEB in Technical Materials.