Sample questions Year 4, medium level. Your worksheet will have new questions. 1.6,191 − 5,819 = ___6191−58192.7,133 − 7,064 = ___7133−70643.4,219 − 1,485 = ___4219−14854.8,220 − 4,191 = ___8220−41915.6,460 − 1,499 = ___6460−14996.8,224 − 5,249 = ___8224−52497.5,587 − 2,938 = ___5587−29388.9,863 − 3,986 = ___9863−3986