Do the following math without a calculator or paper. Just use your mind!
- 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?
The Challenge
This brain teaser has been widely shared because many people stumble over the same tricky part. At first glance, it seems straightforward, but the sequence of numbers can lead to careless mistakes. Your task is simple: add up the given numbers and see if you can get the right answer!
The Common Mistake
Many people rush through the problem, adding the numbers in their heads without keeping track of the smaller increments. As a result, they often arrive at 5000—but that’s not the correct answer.
The Correct Answer
The correct answer is 4100.
To solve the expression 1000 + 40 + 1000 + 30 + 1000 + 20 + 1000 + 10, you can break it down step by step:
- 1000 + 1000 + 1000 + 1000 = 4000
- Now, add the smaller numbers: 40 + 30 + 20 + 10 = 100
- Finally, combine the results: 4000 + 100 = 4100
So, 1000 + 40 + 1000 + 30 + 1000 + 20 + 1000 + 10 = 4100.
Don’t Believe It?
Check with your calculator! You might be surprised by how many people get this wrong. The key is to take your time and add the numbers carefully.
This simple math problem is a great reminder that even the easiest tasks can trip us up if we’re not paying attention. Share this challenge with friends and family to see who can solve it correctly!
