What number is 10 less than 18?

When solving a question like "What number is 10 less than 18?", take a close look at what it is really asking.

You have the number 18 and you are looking for a number that is 10 less than 18. In other words, if you have 18 and take away 10, then how many do you have?

You guessed it! This is a subtraction problem. 18 is the minuend and 10 is subtrahend and the answer we are looking for is the difference.

Therefore, to solve "What number is 10 less than 18?", you subtract 10 from 18 like so:

18 - 10 = 8

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