Test Your Math Skills. Simple Math Problem Keeps Stumping People.

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!