Take a good look at your calculator! Can you find the brackets keys?
There should be one to open brackets ( and one to close brackets ).
To work out the following, simply type it carefully on to your calculator screen, in the order in which it is written.
520 - (577 + 581) =
Did you get -638 as your answer?
That is correct!
Let's try out some more in the questions that follow.
Don't you just love using your calculator!
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Question
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Teacher explanation