Use story clues to decide when to subtract. Spot words like left or gave away, then use − to find how many remain.
														
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You can find more about this topic by visiting  BBC Bitesize - Adding and subtracting
														
 12 - 4 = 8 so 8 books are left 
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 Minus means to take away 
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 Counting back from the larger number to the smaller one is useful when finding 'less than' 
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 Subtract means to take away 
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 The other 3 options are true but in maths 'difference' means to take away.  To find the difference between two numbers, subtract the smaller from the larger 
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 17 cakes are eaten, so 24 - 17 = 7 
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 The two subtractions should give the same answer, which is 6 
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 20 - (5 x 2) = 10 
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 90 - 25 = 65.  
														65 - 20 = 45  | 
												
														
 15 - 9 = 6 
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