He also arranged his books in horizontal lines. He also has nine story books, each of which is two centimeters thick. Can the two-meter long bookshelf be put down?
( 1)3×9 = 27(cm)；
27 cm
A: A 3-meter-long bookshelf can be put down.
(2)3 decimeters =30 cm;
30÷3= 10 (Ben).
Answer: If you want to fill the bookshelf, you can put 10 books.