The first year of mathematics?

The sum of two squares is 12. In the first-grade thinking, it means that the sum of two identical numbers is 12, which means only 6. The pentagram plus diamond and circle are equal to 16, and the diamond is 6, so the pentagram plus circle is equal to 10. The five-pointed star is equal to a circle, so the sum of two identical numbers is 10, only 5, so the five-pointed star is equal to a circle and equal to 5.