This study aims to identify how influence problem solving skill in learning CIRC model towards learning outcomes of mathematics grade five. Method research is quantitative research especially Pre-Experimental Design with design One-Shot Case Study. The variable in this study is the problem solving skills in learning model CIRC as variable X and learning outcomes in match as variable Y. The results showed that problem solving skills in learning model CIRC on math influence to students’ learning outcomes of grade five SDN Rejosari in 03 Semarang. The nominal of influence is 72.83% through the regression equation = 14.741 + 0.812 X. It is evident that there was an effect on the problem solving skills of the CIRC learning model on math student learning outcomes. The remaining 27.17% influenced by other factors contained in the learning activities and learning activities outside.