The way the first square is constructed is the multiplication sign is in the corner and there are the numbers you have to multiply around the outside. The red numbers in the middle of the square are the answers the the multiplication question. You know the multiplication question by looking at the black number in the same row as the answer and the black number in the same column as the red answer.
The 6 is in that particular square because the black number above it is 3 and that black number to the right of it is 2. 3 x 2 = 6 Same for 45. Above it is 5 and to the right is 9. 9 x 5 = 45.
I think the number that had to be doubled was 7.
The grey numbers outside of the red lines are the “black numbers†and the numbers inside of the red lines are the “red numbersâ€.
Copy this link into a new tab to see my completed Mystery Matrix :
https://docs.google.com/document/d/1B9NILlmCLG7WhOypx4VsrvUiMd9CU9lxQKs…
The way I started off was seeing which number around the outside would be obvious. I saw the 49 and I knew that it would be 7 x 7. From doing that, I figured out the doubled number and what the black number to the right of 42 would be: a 6. Then I looked at the column with 22 and 24 and I noticed that they were both multiples of 2. This meant that the 2 would be black number in the same column as 22 and 24. The black number in the same row as 22 would be 11, and the black number in the same row as 24 would be 12. This crosses off 7, 7, 6, 12, 11, and 2. I started looking at what 15 and 27 had in common. They are both multiples of 3! The black number in that row is 3. The black number directly above 15 would be 5 as 5 x 3 = 15. The black number in the same column as 27 would be 9 because 9 x 3 = 27. This leaves the numbers 4, 8, and 10 around the outside. I figured that 32 and 40 were multiples of 8 and 4, but then I remembered that 40 is a multiple of 10. This means 10 goes directly above the 40, 4 would be the black number in the same row as 40, and 8 would be directly above 32. Then I filled out all of the rest of the times tables. This is how I figure out the solution to mystery matix.
Thanks for reading!