Ultimate Mental Math Challenge: Test Your Skills Now!ShareFacebookPinterestTwitterMailSubtract 999 from 10. What’s the result?56%Next Correct Incorrect Think of your bank account being $999 overdrawn and then you deposit $10. You’re still $989 in the negative. Ouch! Subtract 999 from 10. What’s the result? -989 989 -990 -900 56%