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April 18, 2015

April 18, 2015

Posted by **wan** on Wednesday, March 13, 2013 at 8:52pm.

- math -
**Reiny**, Wednesday, March 13, 2013 at 9:08pm8 1 6

3 5 7

4 9 2

total of each row, column and diagonal is 15

- math -
**wan**, Wednesday, March 13, 2013 at 9:15pmthanks ,but how u work it out?

- math -
**Reiny**, Wednesday, March 13, 2013 at 9:47pmmy method works for any odd-numbered square

draw the square, add an imaginary row to the top and an imaginary column at the right

start with 1 in the middle of the top row and**and place consecutive numbers following a righ diagonal pattern**.

If you reach the imaginary top row, drop down to the bottom of that column.

If you reach the imaginary right column, place your number in the left-most open space of that row

If you are blocked, drop down one space and continue the pattern.

If you reach the top - right corner, drop down one

(notice the 7 after the 6 for the 3by3 , and the 16 following the 15 in the one below)

Your last number should end up in the middle of the bottom row.

Practise with some larger squares

here is my 5 by 5

17 24 1 8 15

23 5 7 14 16

4 6 13 20 22

10 12 19 21 3

11 18 25 2 9

everything add up to 65

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