Find the missing numbers.
The sum of the 3 numbers across the square is 11. The sum of the 3 numbers down the square is also 11.
- R
- S
- T
- U
Find the columns or rows with more clues.
(a)
R = 11 - 9 - 3 = -1
(b)
S = 11 - -1 - 7 = 5
(c)
T = 11 - 5 - 8 = -2
(d)
U = 11 - -2 - 3 = 10
Answer(s): (a) -1; (b) 5; (c) -2; (d) 10