Bright primary school donated 50 books per package. In the third grade, I donated 12 packs, with 35 extra packs. There are five books left in the fourth grade, 15 packs. (1) How many books did you don
Bright primary school donated 50 books per package. In the third grade, I donated 12 packs, with 35 extra packs. There are five books left in the fourth grade, 15 packs. (1) How many books did you donate in the fourth grade?
( 1)50× 15-5
=750-5
=745 (Ben).
A: I donated 745 books in the fourth grade.
(2)597-50× 1 1
=597-550
=47 (Ben).
There are 47 books left.