This action research was conducted to elucidate the effectiveness of mathematics review in the learning of high school chemistry and in problem solving. The subjects were two randomly constituted class sections in the third year chemistry program in Liceo de Cagayan University. Before starting the treatment; two similar tests were prepared as the pretest and posttest. At the end of the term, the posttest was administered. Then, the statistical technique of paired-sample t-test was utilized to analyze the collected data. Analysis of the results in the posttest revealed that there is no significant difference between experimental group and control group. The study recommends a revisit of the policy on mathematics review since it does not give an edge in the learning of chemistry concepts.