(a) 9.756 – 6.25 = 9.756 – 6.250 = 3.506 (b) 21.05 – 15.27 = 5.78 (c) 18.5 – 6.79 = 18.50 – 6.79 = 11.71 (d) 11.6 – 9.847 = 11.600 – 9.847 = 1.753