The purpose of this quantitative research was to find out the vocabulary mastery of the third year students of SMPN 40 Pekanbaru. The study sample was 35 students. The result of data analysis showed that multiple-choice test 1 was 37.6 and categorized into “very poor level” and test 2 was 57.8 and categorized into “average level”. The conclusion concerning the category classification is…