On Friday, Debby borrowed $10 from
her sister. The next day, she paid
back $5 to her sister. On Monday, she
borrowed $4 more. Which number
sentence describes the amount Debby
owes her sister?
Visually imagine the amount of money being borrowed. Debby already owed 10, but then paid 5 back. So she only owed five bucks but then she borrows four bucks which adds up to 9 bucks she owed her sister.
