And while I think you should definitely try to improve your on-the-fly number crunching ability, remember that being a good mathematician does not mean being a human calculator.
If you ask me what's 15 x 3, I immediately know that it's 45, and I expect your friend does too.It happened again today. A friend of mine and I were talking about something and he was trying to numerically give me an idea. so as he was making his point he was like what's 15 x 3.
But I was always pulled out the class for ESL during the time she was teaching the math so I missed out on it and never learned it. I'm not sure about the places with the digits of numbers. What's tens, ones, thousands, ten-thousands. It wasn't until 9th grade that I parted ways with ESL.
So now I have to re-learn all the math I didn't learn in grades 3-5
Yeah. Thank you ALL for the advice. I'll look online for some basic math stuff. I like the idea of asking myself questions as I walk outside / through the supermarket and stuff.
In addition to the suggestions given, I would try to find yourself a "math tricks" kind of book. I found a good one (although I'm on campus right now and the book is home, so I don't remember what it is called) that shows you ways to quickly multiply, divide, or estimate answers.
On top of that, what people said: practice. I had a similar problem truthfully, not as bad but simple things would catch me offguard. But I did exactly what others are saying, just calculating things in my head everyday. Not to the point where it's obnoxious, but when an appropriate situation arises.
Simple things like, I'm going 85mph, the exit is in 5 miles.. how long will it take me to get there..
just to get your mind going, even just estimating, getting used to how numbers act with others and such.
and also, a helpful (albeit simple) hint for multiplication and the like.. is to split up the number.
15 x 3 is 10 x 3 + 5 x 3... to this day, that's how I see it in my head, and I can figure it out quickly.
learn to split things up when adding too, 26 + 17, to me is immediately (20+10)+(6+7)... in my head, I'm thinking rapidly that 6 needs 4 more to be 10, and then what will be left of 7?
Do these things all the time, in different situations, and you'll grow to be more and more comfortable with it.
I know 5 is 10/2,I did the 85mph divided by 5 in my head.
It's the total number of 0s (except of course you have to be careful because the 20 has an extra 0) …Now one last question with multiplication / dividing.
See how 4x5 = 20? So 400 x 500 =??? 20xxx but how do I determine the amount of zero's after the 20? what's the trick?
My guess: It's either one of two things...This post is similar to this guys: http://https://www.physicsforums.com/showthread.php?t=369870&highlight=I%27m+bad+at+math" [Broken]
Long story short, I'm a freshman in college but I struggle with the really BASIC BASIC stuff in math. The other day, I nearly embarrassed myself in-front of a few students. The teacher asked me what's some 3 digit number divided by another 3 digit number and it was one of those "you don't NEED a calculator for" and I didn't know it. I was sweating buckets and the place was dead silent with everyone staring. I tried to play it off as if I didn't understand what she was saying until about 5 minutes later that I finally got the answer. The point is, I struggle with the basic stuff in math. With my calculator I can just punch stuff in on exams and I'm good to go. (that's how I got this far). But the simple stuff you don't need calculators for, I struggle with. I've done well on math before and when I use my calculator I can get things done. But without a calculator, I don't know the basics.
Ex, if someone asks what's 7x8 and I don't have a calculator I wont be able to tell them. And I'm afraid that might embarrass me in public one day. Also I don't know how to add / subtract 3 digits without a calculator. I can't help my little sister with her 5th grade homework unless I jump on Google or use a calculator. I can't quickly tell time on an analog clock and when I look at a digital one, ex supposed the time is 1:16 and you want to know how many more minutes 'til 2:00 I can't tell you it quickly. I'll have to do it in my head for a bit. When I buy something, I can't do the math in my head so I never double check if I get the correct change or not. I always take it as is. When I do try to do the math, I just focus on the dollars and ignore the change.
I'm I suffering from something? This has really been bothering me a lot these few days. It has completely killed my self confidence and motivation.
On that note, comparison shopping is a pretty good application. Calculating the price per unit quantity of food (e.g. price per quart for beverages, price per pound or per ounce for other things, etc.) can potentially save you money and it's also good practice at estimating quotients.Yeah. Thank you ALL for the advice. I'll look online for some basic math stuff. I like the idea of asking myself questions as I walk outside / through the supermarket and stuff.