Nica had 18 books. She shared some books with a friend and had 12 books left. Which number sentence could be used to find the number of books Nica shared?
Nica had 18 books. She shared some books with a friend and had 12 books left. Which number sentence could be used to find the number of books Nica shared?
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We can use subtraction to find the number of books shared by Nica