What number is 5 less than 23?

When solving a question like "What number is 5 less than 23?", take a close look at what it is really asking.

You have the number 23 and you are looking for a number that is 5 less than 23. In other words, if you have 23 and take away 5, then how many do you have?

You guessed it! This is a subtraction problem. 23 is the minuend and 5 is subtrahend and the answer we are looking for is the difference.

Therefore, to solve "What number is 5 less than 23?", you subtract 5 from 23 like so:

23 - 5 = 18

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