Brain Teasers
Math in Your Head
Note: This riddle must be done IN YOUR HEAD ONLY and NOT using paper and a pen.
Take 1000 and add 40 to it.
Now add another 1000.
Now add 30.
Another 1000.
Now add 20.
Now add another 1000.
Now add 10.
What is the total?
Take 1000 and add 40 to it.
Now add another 1000.
Now add 30.
Another 1000.
Now add 20.
Now add another 1000.
Now add 10.
What is the total?
Answer
Did you get 5000?The correct answer is actually 4100.
Don't believe it? Check with your calculator!
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Comments
What happens if I actually did get 4100? That kind of spoils the riddle then.
Those few for whom the riddle is spoiled may take solace in the fact that they got the answer right.
I don't egt it! will someone explain it to me?
Mike1313: What happens if you get any teaser right? Does that spoil those teasers, too?
missie there are 4 1000 marks in the riddle then there is one at 40 one at 30 one at 20 and one at 10. most people will automatically think that the correct answer is 5000 because of the other 1000's placed in the riddle and the way they are placed, but if you add the smaller digits up first then the 1000's you would get the right answer.
Wow, I feel so clever.
Neat. I got 5000 and felt like an idiot when I was wrong. I hate being wrong.
thats amazing, I did it 3 times in my head and all 3 times came up with 5000, and the calculater is correct at 4100.
The Bomb teaser!! thanks
The Bomb teaser!! thanks
I got it right, but only because it was on a programme one time. However at that time I got it wrong. This rules !
Geez, I got 4100
I can't see how you would end up with 5000... oh well.
I wouldn't have put the calculator in the teaser. I would have asked them to use a calculator in the answer.
its harder to use place value in your head i messed the place value up and go t 5000 but my second try i got 4100
I don't get this one. Who would get 5000? What makes this a teaser?
You should be able to add that as fast as you can read it and certainly should not get 5000.
You should be able to add that as fast as you can read it and certainly should not get 5000.
Way to go Guru - how does poor arithmetic make a teaser?
Army arithmetic? MajoR Bore.
My five year-old answered 4100.
Yes if there is no commas it would add up to 4100 but the commas changes the numbers it is not read with decimals
It adds up to 4,070,030 if you use the commas like written in the brain teaser
on the quiz it is not add 1000. it says add 1000, which is one million! so if whomever made this brain teaser says the answer is 4100 they need schooling
Great teaser! I got fooled, and I think I'm good at math! I got to 4090, and when I added 10, I took it right to 5000! One of those mathematical sleights of hand... Nice!
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