Maybe you never get an educated guess with the question "There is a number consisting of numbers 1, 2, 3, 4, 5, 6, 7, 8, and 9. Then all the numbers inserted into a square grid of nine squares. How do I compose these numbers in order to obtain the results of the total number of horizontal, vertical total number, and the number of diagonals have the same values. "The question I get when I was still in elementary school fourth grade.In principle, this guess is to train our logic skills and arithmetic ability in mathematics. Therefore I recommend this guess as instruction in mathematics or other guesses to stimulate students to be more interested in learning mathematics.Back to the original question was how to answer that question, here's a step in answering the question.1. On each side of the square make a square box help as shown below:
2. Enter the numbers in sequence according to a diagonal direction as follows:
Or
Note that the final result as follows:
Now let's check out the results:2 + 7 + 6 = 15
2 + 9 + 4 = 15
9 + 5 + 1 = 15
2 + 5 + 8 = 15
etc………
It turns out all the numbers in rows, columns and diagonals indeed produce the same number, namely 15
