Instructions:
Fill the multiplication square so that the center fields are the results of the multiplication of the fields in the corners, which are adjacent central field.
Example
18
X
12
5
4
Solution
6
18
3
30
X
12
5
20
4
6 . 3 = 18 | 3 . 4 = 12 | 5 . 4 = 20 | 6 . 5 = 30