Williams F1 maths test: answers Write 0.3 as a fraction. Answer: 3/10 The square of 7 is = 49 The cube of 2 is = 8 What is 11pc of 250 = 27.5 Increase 64 by 12.5pc = 72 Find the value of x2 + 2xy + y2 where x = 6 and y = -3 Answer: 9 If log 3 = 0.4771 and log 4 = 0.6020, log 40 = 1.602 If log 3 = 0.4771 and log 4 = 0.6020, log 0.12 = -0.92 The cube root of 27 is = 3