Vocabulary mastery of the eight grade students SMP S 3 Padang Bolak Julu

The problems of research focused on vocabulary mastery of the eighth grade students SMP N 3 Padang Bolak Julu, students in vocabulary master was low, students had lack of motivation in learning vocabulary, and students did not have the suitable strategy in learning vocabulary. The research methodology of this research is quantitative desccriptive research. The subject of this research is eighth grade students SMP N 3 Padang Bolak Julu which consist 35 students as a sample. Instrument in collecting data was test. The kind of the test was multiple choice with the 20 noun and time allocated for the test is 60 minutes. Then the researcher analyzed the data by uses mean score to find out vocabulary mastery of the students and researcher used Z formula to find the hypothesis testing and to know whether the hypothesis is accepted or rejected. After calculating the data, the researcher find that the vocabulary mastery of the eighth grade students SMP N 3 Padang Bolak Julu 67.64 mean score and the category was enough category. Then, from the hypothesis testing the researcher found that hypothesis is accepted. It can be proved from Zcount = 0.92 > Ztable = 0.3264 by level significant 70%. Therefore, vocabulary mastery of the eighth grade students SMP N 3 Padang Bolak Julu are enough category