Circle + triangle = 120 circle = 4 triangles added Circle + triangle = 120 Circle = 4 triangles added How much is a circle? How much is a triangle? (third grade mathematics) What I want is how to explain to children

Circle + triangle = 120 circle = 4 triangles added Circle + triangle = 120 Circle = 4 triangles added How much is a circle? How much is a triangle? (third grade mathematics) What I want is how to explain to children

Take "circle = 4 triangles added" into the first formula, then 5 triangles = 120
So triangle = 24
Circle = 24 * 4 = 96
O+△=120
O=△+△+△+△
So △ + △ + △ + △ is 120, that is, 5 △ is 120, so △ is 24
O=△+△+△+△=96