The objective of the current research is to determine the percentages of mental abilities of the Guilford model in the content of the mathematics textbook for the sixth grade of primary school. The content analysis research was adopted to analyze content of the mathematics textbook for the sixth grade of primary school set by the Iraqi Ministry of Education in the academic year (2021-2022). A list of mental abilities was prepared according to the Guilford model to analyze the content of the mathematics book for the sixth grade of primary school, and to determine their proportions in the book after being validated and checked their stability. Results of the analysis showed that there is a discrepancy in the percentages and frequencies of mental abilities and at the level of the mathematics book for the sixth grade as a whole. The focus of the math book focused on knowledge thinking abilities which occupied the first rank with percentage of (29.24%) followed by memory thinking abilities which form 25.72%. Convergence thinking abilities came in the third rank with a percentage of 25.37%, followed by the evaluative thinking abilities which form 18.88% of the mental abilities. Finally divergent thinking abilities constructed just 0.80% of the mental abilities.