What number is 10 less than 23?

When solving a question like "What number is 10 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 10 less than 23. In other words, if you have 23 and take away 10, then how many do you have?

You guessed it! This is a subtraction problem. 23 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 23?", you subtract 10 from 23 like so:

23 - 10 = 13

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