Sample questions Class 4, medium level. Your worksheet will have new questions. 1.3/5 + 1/5 = 2.7/10 − 4/10 = 3.9/10 + 7/10 = 4.2/4 − 1/4 = 5.4/6 + 1/6 = 6.6/7 − 2/7 = 7.4/7 + 6/7 = 8.4/8 − 3/8 =