Bullfrog, you are sooo naughty. That was funny.
Um, some people just aren't good with numbers, calculator or no calculator, good education or not. I never had any math any higher than basic math, no algebra, geometry, trig, calculus or whatever. I love math and easily do it in my head. But I think sometimes kids are so used to having been taught YOU DO IT LIKE THIS, they didn't understand what they were being taught to do. It's like me and the computer, I know what buttons to push but have no understanding of how it works. I remember being taught fractions and decimals. I knew I didn't understand what they were saying so memorized how to do it. Eventually it dawned on me why 1/3 was smaller than 1/2 even though the 3 was larger than the 2. LOL.
I have a Facebook account and on Facebook is a virtual Farm game thing. After you plant the crops, as time goes along, when you place the cursor over that crop, it'll say "crop 55% grown" or something like that. When people want to know how long it takes for the crop to be ready, they have to know that the Farm Town day is only 20 hours long, not 24 so that complicates things a bit. But I'm surprised at how many people I've run into who have no idea how to figure out when the crop will be ripe and ready to harvest. For a while there I wrote it up and copied and pasted it to all my neighbors so they wouldn't be having their crops go to waste. (LOL first I typed waiste, speaking of spelling.)
My Dh received very good marks in math and took algebra too but now, 45 years later barely can do simple math and is very intimidated with calculations of any sort.