• Tikiporch@lemmy.world
    link
    fedilink
    arrow-up
    22
    ·
    1 year ago

    Well, single digit percentages are easy. If it helps, move your decimal to the right so 9% becomes 90%. You can probably calculate 90% of 3 because you can do 10% and subtract it and get 2.7. Now move your decimal back to the left and you get 9% of 3 which is 0.27. You can do the same with higher percentages once you learn to break them in to 10% pieces.

      • Mr_Dr_Oink@lemmy.world
        link
        fedilink
        arrow-up
        18
        arrow-down
        1
        ·
        edit-2
        1 year ago

        This is not mental gymnastics.

        This is a coherent method and makes a lot of sense.

        Mental gymnastics is when someone has to lie to themselves to make a point that isn’t correct. Like when people argue that trump was a good president because they can list several good things he did.

        Or when people claim something is mental gymnastics when it’s actually called maths.