The year, month and day of grade three mathematics are on page 76. According to the relevant public information, the third-grade mathematics of People's Education Press learned the timing method of year, month and day on page 76, and the year, month and day of third-grade mathematics were on page 76. Mathematics is a subject that studies concepts such as quantity, structure, change, space and information. Mathematics is a universal means for human beings to strictly describe and deduce the abstract structure and mode of things, and can be applied to any problem in the real world. All mathematical objects are artificially defined in essence. In this sense, mathematics belongs to formal science, not natural science. Different mathematicians and philosophers have a series of views on the exact scope and definition of mathematics.