In this activity, we will learn how to fill in missing numbers in magic squares.
Example
Fill in the missing numbers in this magic square.
Answer
Each row, column and diagonal must add to the same amount (the magic total).
The clue here is that we have 3, 5 and 7 in a column, which means that the magic total is 3 + 5 + 7 = 15
Use this fact to complete the square using addition and subtraction.
Let's try some ourselves now.
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Question
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Teacher explanation