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Little turtle and grandpa's math problems
Your question may be: Little Turtle is 102 years old this year. 10 years later, Grandpa Tortoise is four times older than Grandpa Tortoise. How old is Grandpa Tortoise?

The answer is: (102+10) * 4-10 = 438 years old.

Mathematics Mathematics is a discipline that studies the concepts of quantity, structure, change, space and information, and belongs to a formal science from a certain point of view. Mathematics is produced by counting, calculating, measuring and observing the shape and motion of objects through abstract and logical reasoning. In many countries and regions, mathematics has become a part of education. It is applied in different fields, including science, engineering, medicine, economy and finance. Mathematicians also study pure mathematics, which is the substantive content of mathematics itself and does not aim at any practical application.