Many of the exits on I-35 are not named or numbered, some are even wrong.
Northbound :
Exit 271: CR311 / CR237
https://www.waze.com/editor/?lon=-97.62727&lat=30.7669&zoom=5&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=47217005
Exit 279: Hill Rd
https://www.waze.com/editor/?lon=-97.59032&lat=30.8518&zoom=5&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=64209033
Exit 280: Grainger Rd / Hackberry Rd
https://www.waze.com/editor/?lon=-97.57848&lat=30.87758&zoom=5&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=64209181
Southbound:
Exit 283: FM 2226 / FM 2843
https://www.waze.com/editor/?lon=-97.54095&lat=30.93753&zoom=6&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=46959947
Exit 280: Hackberry Rd / Grainger Rd
https://www.waze.com/editor/?lon=-97.56348&lat=30.90054&zoom=5&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=64209296
Exit 279: Hill Rd
https://www.waze.com/editor/?lon=-97.57531&lat=30.88552&zoom=5&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=64209268
Exit 277: CR 305
https://www.waze.com/editor/?lon=-97.58192&lat=30.87134&zoom=5&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=64209097
Exit 275: FM 487
https://www.waze.com/editor/?lon=-97.59515&lat=30.84289&zoom=5&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=64208985
This one has the wrong exit number
Exit 274: CR 312
https://www.waze.com/editor/?lon=-97.60938&lat=30.81814&zoom=5&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=64208772
Exit 271: CR 237 / CR 311
https://www.waze.com/editor/?lon=-97.62531&lat=30.77676&zoom=6&layers=BFTFTTTTTTFTTTTTTTTTFT&segments=47223362