[jack_pp]

Calculations are for calculators. I was good at math in school but now I struggle / take so much time doing receipt math and for what? What's the purpose of the time you spend doing it, when do you need to have your brain trained for this specific task?

[hooverd]

For me, being able to notice when you mess up your own calculations. It doesn't help that we teach arithmetic operations ass-backwards (smallest to largest instead of largest to smallest).