What number is 4 less than 31?

When solving a question like "What number is 4 less than 31?", take a close look at what it is really asking.

You have the number 31 and you are looking for a number that is 4 less than 31. In other words, if you have 31 and take away 4, then how many do you have?

You guessed it! This is a subtraction problem. 31 is the minuend and 4 is subtrahend and the answer we are looking for is the difference.

Therefore, to solve "What number is 4 less than 31?", you subtract 4 from 31 like so:

31 - 4 = 27

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