Whats the importance of mental calculating?

Question

Please i really need some good answers as this is a king of questionnaire. Thanks

Answer 1

It is useful to guesstimate results, so as for instance avoid being shortchanged at the supermarket, or being able to figure out how much fabric you'd need for curtain if you forgot to take accurate dimensions.

Is is also useful to determine how much off figures put in news articles could be off as some journalist do not check their numbers before printing them.

Answer 2

Hello,dragonflame! I do not know what a "king of questionnaire" is, but I hope I can help. I think that this is importamt because it causes one to think in a logical way. I remember being in high school and asking my father what was the good of taking a certain math course. He replied,"Because it teaches you to think logically." I understand what he meant.
"Mental calculation is the practice of doing mathematical calculations using only the human brain, with no help from any computing devices. It is practiced as a sport in the Mind Sports Olympiad. Mental calculation is said to improve mental capability, speed of response, memory power and concentration."

Answer 3

I think the others here have provided you with terrific answers (except the first guy with "c" and the other one's long-winded cut-and-paste reply).

One of my teachers once recounted something he saw: a student using a calculator to figure out 5+7, or some such simple sum. The teacher attributed it to students being too reliant on calculators (technology), and reminded us that we should never stop using our brains for simple things.

It's a good lesson, but it doesn't stop at math. I see so many people on here using the dreaded IM "language" in their answers, and it makes me sick. Those people can't seem to separate when they *need* to do that (spatial constraints of text messaging, I guess) vs. when it's not necessary (posting questions/answers here, emails, posting on message boards, etc.) and have thus allowed it to become a disgusting habit. It's one thing to use understood abbreviations/acronyms (LMAO, for instance), but another to use spelling shortcuts that aren't so universally known.

Remember the old saying: "If you give a man a fish, you feed him for a day - if you *teach* a man to fish, you feed him for a lifetime." That means if you supply someone the shortcut tools to success, that person will only succeed as long as the shortcuts are available. Meanwhile, the person who doesn't need the shortcuts (the "easier" way) can succeed with or without them.

Answer 4

The answer is twofold.

One day you may need to do some calculating without your calculator. I am impressed by how many times clerks in (I'm sorry) American stores have given my incorrect change. If you cannot add up your own change, how can you hope to balance your checkbook, calculate the interest on your car repayments or work out your mortgage loan?

Second reason, it trains your brain to think! Don't just blindly accept the answers you are given without questioning! One day you may accidentally punch the wrong number into your calculator.

Answer 5

Aside from saving a lot of scratch paper and preventing you from relying too much on technology, it helps in improving your thinking skills. As you do more mental calculation, your memorizing and analyzing capabilities increase. I know so coz I've been doing mental calculation for years and now I can calculate long and complex algebraic operations without using calculators or even writing on scratch paper!

Answer 6

You mean learning how to actually do math problems instead of punching numbers on a calculator? Actually, mental calculating doesnt necessarily have to be math. But anyway, it makes you think which is always good, and what happens if you run out of batteries, it gives you a better grasp of what you are doing.

Answer 7

It helps to increase the ff.:
- mental alertness
- faster 'processing' of numbers
- and of course, you'll be good in math

Answer 8

for one thing it allows you to analyze things without having to make a production out of it, so that when somebody tells you that you can save a jillion dollars a month by buying his product, you immediately get a sense of whether he's full of it or not.

Answer 9

first u dont have to use calculator,second you will be smarter.

Answer 10

c