Prima: Jurnal Pendidikan Matematika Vol. 7, No. 1, January 2023, pp. 77-88 P-ISSN: 2579-9827, E-ISSN: 2580-2216 Web: http://jurnal.umt.ac.id/index.php/prima Received: December, 2022; Revised: January, 2023; Accepted: January, 2023 MATH ANXIETY AS A PREDICTOR OF MATH COMMUNICATION ABILITY ON SENIOR HIGH SCHOOL STUDENTS Dinda Haniyah 1 , Hikmatul Khusna 2 1,2 Universitas Muhammadiyah Prof. DR HAMKA, Jl. Tanah Merdeka No.20 Kota Jakarta, Indonesia e-mail: hikmatulhusna@gmail.com Abstract Math anxiety is one of the aspects that plays a role in the form of talent that students have, so that if math anxiety can be controlled properly, so this aspect also has an important effect on students' math communication ability. This research aims to determine math anxiety as a predictor of the math communication ability of high school students. The sample in this research was at SMAN 10 Bekasi in semester 1 of the 2022-2023 academic year class XII. The research method used is the correlational research method. The sampling technique used is Simple Random Sampling. The sample taken was 58 students. The results of the research instrument test were obtained by testing the math communication ability test instrument as many as 5 questions and the math anxiety questionnaire instrument as many as 32 questions. The results of the research instrument test were obtained by testing the math communication ability test instrument as many as 5 questions and the math anxiety questionnaire instrument as many as 32 questions. The results of this study are that there is an 8.8% relationship between math anxiety and math communication ability. Math communication ability is not only influenced by math anxiety but there are many other factors of 91.2% that affect math communication ability. So, students' communication ability cannot yet be said to be ideal. Because the average student does not have the math communication ability to ask questions and in solving math problems still depends on his friends. Meanwhile, students who have good grades are mostly due to often practicing questions at home and have the active to ask the teacher. Keywords: math anxiety, math communication ability, predictor Abstrak Kecemasan matematis merupakan salah satu aspek yang berperan terhadap bentuk bakat yang dimiliki siswa, sehingga jika kecemasan matematis dapat dikontrol dengan baik, sehingga aspek ini juga memiliki pengaruh yang penting dalam kemampuan komunikasi matematis siswa. Penelitian ini bertujuan untuk mengetahui kecemasan matematis sebagai prediktor terhadap kemampuan komunikasi matematis siswa SMA. Sample pada penelitian ini di sekolah SMAN 10 Bekasi semester 1 tahun ajaran 2022-2023 kelas XII. Metode penelitian yang digunakan adalah metode penelitian korelasional. Teknik pengambilan sampel yang digunakan adalah Simple Random Sampling. Sample yang diambil sebanyak 58 siswa. Hasil uji instrumen penelitan diperoleh dengan pengujian instrumen tes kemampuan komunikasi matematis sebanyak 5 soal dan instrument angket kecemasan matematis sebanyak 32 pertanyaan. Hasil penelitian ini yaitu terdapat 8,8% hubungan antara kecemasan matematis dan kemampuan komunikasi matematis. Kemampuan komunikasi matematis tidak hanya dipengaruhi oleh kecemasan matematis tetapi ada banyak faktor lain sebesar 91,2% yang mempengaruhi kemampuan komunikasi matematis. Jadi, kemampuan komunikasi siswa belum bisa dikatakan ideal. Hal ini disebabkan rata-rata siswa belum memiliki kemampuan komunikasi matematis untuk bertanya dan dalam menyelesaikan soal matematika masih bergantung kepada temannya. Sedangkan siswa yang memiliki nilai yang bagus sebagian besar dikarenakan sering berlatih soal di rumah dan memiliki keaktifan untuk bertanya pada guru. Kata kunci: kecemasan matematis, kemampuan komunikasi matematis, prediktor