This riddle must be done IN YOUR HEAD and NOT using paper and a pen. Try it!
Take 1000 and add 40 to it. Now add another 1000.
Now add 30. And another 1000.
Now add 20. Now add another 1000. Now add 10.
What is the total?
Please don't cheat.
After you think you have it right, grab a calculator and see if you are
correct. Post whether or not you got it right.