Negative MagicIn a magic square the numbers in each row, column and both diagonals add up to the same total. 
Here are four magic squares. Work out the magic line total for each square then fill in the missing numbers.
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 



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In a magic square the numbers in each row, column and both diagonals add up to the same total. The first task is to find what that magic total is for each square.
For example, in the following square there is one line of three cells that are already filled in. The magic total can be found by adding those three numbers togather.
Magic total = 4 + 1 + 2 = 3
Now look for a line of three cells of which two are already filled in. In this example the top row. The missing number when added to 4 and 3 will give the magic total of 3. It can be found by subtracting the two given numbers from 3
3 (4 + 3) = 3 + 4  3 = 2
Repeat this process by finding lines of three cells of which two are already filled in.
3  (2 + 2) = 3
Again
And again
And again
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