Current location - Training Enrollment Network - Mathematics courses - (1) The cover width of the math textbook is about 2 _ _ _ _ _. (2) The average height of sophomores is about128 _ _ _. (3) the mathematics teaching department you use.
(1) The cover width of the math textbook is about 2 _ _ _ _ _. (2) The average height of sophomores is about128 _ _ _. (3) the mathematics teaching department you use.
(1) The cover width of the math textbook is about 2 decimeters;

(2) The average height of senior two students is about128 cm;

(3) The thickness of the math textbook you use is about 6 mm;

(4) The distance of marathon is 42km 195m.

So, the answer is: (1) decimeter; (2)cm; (3)mm; (4) kilometers, meters.