(Disclaimer: I have ADHD and am completely useless when it comes to math. So please forgive me for being super-stupid on the subject.)
To my understanding, Mathematics are seen as completely logical. Which I don’t have a problem with except for when it comes to one certain thing in math that I just can’t make sense of as being considered logical:
Rounding of decimals.
To my understanding, the rule is that when you have a decimal that is 5 or higher, you round up. If 4 or lower you round down.
Two things that I don’t understand about this:
1. When you round up, you magically pull value out of the air that wasn’t there to begin with, and do the opposite when rounding down. How is this considered logical?
2. The rule isn’t applied universally. I’ve seen cases when, for example, making store purchases, no matter how low the decimal, it is rounded up and not down.
I appreciate any help you guys can give. Thank you in advance for the assistance! <3
In: 6
Rounding isn’t really “math” math. It’s just convenience step you perform after you’ve done the computations, since for us humans it’s just easier to deal with rounded numbers.
Additionally, when rounding does happen, it’s supposed to shave off or add amounts that are too small to be relevant to the situation. When you’re talking about your weight, for example, going plus or minus two grams shouldn’t be relevant in any situation where your weight comes up.
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