Making them can sometimes be challenging, so here’s an editable question stack template you can use to save time (it’s a PowerPoint file).
As a pro tip: To make a really quick answer stack, I use Kuta worksheets and add screenshots (using the built-in snip program on my computer) in each box of the original problem and then the answer in the answer box. I’ve uploaded the file in PowerPoint format because it’s much easier to move around screenshot pictures in PowerPoint than it is in Word. If you’d rather hand type things, then please do! The file is 100% editable.