8. Opening paper is to cut a whole piece of paper into eight equal sheets, and the size of each cut sheet is eight. There are 32 math books in the sixth grade of primary school, which is the size of a whole paper cut into 32. 32 ÷ 8 = 4, so an 8-page paper is as big as four 32-page math books.

Open the math book, turn to the first page, and you will see the copyright page on the left page. There is a line in the lower part of the middle:

"890 mm× 1240 mm 1/32", where "1/32" means one thirtieth of a whole paper, that is, 32 slits.

Extended data:

When designing a general book, it is related to the size of a large piece of paper: 31x 43 (78.74 cm x109.22 cm). This paper is folded in half to become two (four pages) at a time, which is called folio; When folded in half again, it is folded into four parts (eight pages), which is called quarto; When folded in half again, it is folded into eight (sixteen pages), which is called octave; When folded in half again, it becomes sixteen (thirty-two pages), which is called sixteen; And so on. This is the historical origin of the size of the book, and it is still called this.

32K hardcover book

Finished product size:184 x130 mm;

Version size:153 x100 mm;

Appointment to appointment: 32mm

Turn over: 36mm

Foot to foot: 30mm

Head to head: 48 mm

References:

Baidu encyclopedia-book size