Current location - Training Enrollment Network - Books and materials - There are 72 books in the corner, including 19 story books, 28 comic books, and how many other books are there? The formula is 72- 19+28=25 (Ben). _ _ _ _
There are 72 books in the corner, including 19 story books, 28 comic books, and how many other books are there? The formula is 72- 19+28=25 (Ben). _ _ _ _
19+28=47 (Ben),
72-47=25 (Ben);
Column into a comprehensive formula to calculate 19+28, so add parentheses to it, namely: