Generally, we look at large numbers and divide them into decimals.
Thinking:
(1)8 Who constitutes 10? Eight plus two equals 10.
②7 can be divided into 2 and 5.
(3)2 and 8 constitute 10, 10+5 = 15.
So 7+8= 15.
In 2007, the choice of fill-in-the-blank questions in Mathematics II was changed to 16 questions. Since