Mix all the multipliers and everything together, shuffle up and that's going to be a way better of an exercise + also beneficial for adults (perhaps you know Dr. Ryuta Kawashima - he says doing easy math exercises fast every morning is a great thing).
Fully molly agree! I really love this tool, love it!
I found it really addicted to play the mini calculation game lol
The sounds from the UI are really satisfying :)
The problem I seen with apps like this is my kid likes get it wrong on purpose to hear the sounds.