# [Tex/LaTex] Giving an equation between ’s a number

equationsmath-modenumbering

I usually use $...$ to typeset equations in latex and sometimes I come back and realize that I want to have an equation number and label. I have been coming back and editing it to $$...$$ but this is annoying and time consuming. Is there a command to do something like $\addeqnumber{}$ which will work the same way as the equation environment? I am aware this probably isn't the best practice, but it would save me some annoyance.

\documentclass{article}
$1+1=2 \addtag$