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Quick! See if you can add these numbers in order, outloud:

1,000 + 40

1,000 + 30

1,000 + 20

1,000 + 10

if you said

5,000, you’re in the same boat as lots of people who have said the same thing… but you’re also sunk:

The correct answer is 4,100

Try it again slowly, then try it on someone else.)