Negative Magic

Instructions Try 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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Example

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

Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can double-click the 'Check' button to make it float at the bottom of your screen.

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Negative Magic

In a magic square the numbers in each row, column and both diagonals add up to the same total.

Instructions Magic Square Unmagic Square Magic Square Puzzle More Negatives

Instructions

More Activities:

Featured Activity

Beat The Clock

Answers

Go Maths

Maths Map

Teachers

Example