Multiples of 1124.
Sum of the five weights = 1124 units so average = 1124/5 = 224.8 units
1124 / 2 is equal to 562.
-17
Saint Cadfan died in 5##.
-5 - (-5) = 0
minus 4 is bigger because minus 5 is further away from naught that minus 4 is
(-7) - 5 - 2 = -14
Minus a negative means you add: 10.3 - -5 = 10.3 + 5 = 15.3
-10 minus -5 is -5
11 minus 5 is 6
-5 minus 4 is -9.