Rename math/add.py to maths/add.py (#1857)

* Rename math/add.py to maths/add.py

* fixup! Format Python code with psf/black push

* Fix sum to add

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: John Law <johnlaw.po@gmail.com>

Christian Clauss committed 6y ago

f6ee518ee1262d4680e468cc8f1ea8fae5e72d68

Parent: 2fc3f2e

Committed by GitHub <noreply@github.com> on 4/13/2020, 5:50:46 AM