특히, 문제가 센티미터(cm)가 아닌 미터(m) 단위를 요구할 때, 제곱 센티미터(㎠)가 아닌 세제곱 센티미터(㎤) 단위를 요구할 때 오답률이 높았다.
In particular, when the question asked for units in meters (m) instead of centimeters (cm), the error rate was high when it asked for units of cubic centimeters (cm3) rather than square centimeters (cm2).