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The objective of this paper was to demonstrate the effectiveness of the “Playing with problems” program in solving additive problems in 6th grade students of the “Fernando Stahl” Seventh-day Adventist School in the city of Moquegua, in 2017. This investigation was performed considering two variables: Resolution of additive problems (dependent variable) of type comparison and equalization, with its dimensions: understand the problem, devise a plan, execute the plan and retrospective review; and “Playing with problems” program (independent variable). This research work is experimental in type, pre-experimental design and the sample consisted of 24 students, 14 men and 10 women. The instruments used to collect and evaluate the data were a written exam and an observation guide. It is concluded that the “Playing with problems” program was effective, showing significant improvements in the resolution of additive problems. Before the application of the program in the evaluation of the pre-test, 87.5% of the students were at the beginning level, 12.5% at the process level and 0% at the achievement level. This result changed significantly after the execution of the program, because in the post-test evaluation 4.2% of the students are at the start level, 37.5% at the process level and 58.3% reached the level of achievement.

APLICACIÓN DEL PROGRAMA “JUGANDO CON PROBLEMAS” Y SU EFICACIA EN LA RESOLUCIÓN DE PROBLEMAS ADITIVOS EN LOS ESTUDIANTES DEL 6° GRADO