A learning model focusing on teaching and problem-solving skills, then strengthening those skills. Learning problem-solving applications can help students who do not understand the lesson content previously given by the teacher and can improve their motivation and problem-solving skills. Children. This study aims to determine the significant impact of a problem-solving learning model supported by Liveworksheet-based exercises on the mathematical problem-solving ability of Grade VII students in social arithmetic. This research is quantitative. The quantitative descriptive method measures the influence of the math solving model supported by Livesheet Worksheets (LKPD) on the ability to complete math subjects of 7th-grade middle school students in social arithmetic subjects—data analysis technique using descriptive percentages. Based on the descriptive analysis of percentages and students' math-solving ability, it shows that, in general, students' math-solving ability is relatively high. This can be seen in the proportion of high-quality problem-solving models supported by the LKPD Live Worksheet. Based on the analysis, the results show that the problem-solving model supported by LKPD Direct LKS influences mathematical problem-solving ability