5.
Mindy took all the cookies out of Mom’s cookie jar and counted them. She counted
• 12 chocolate chip
• 24 sugar
• 16 almond
• 21 peanut butter
Part A.
Mindy explains there are 613 cookies because 2 + 4 + 6 + 1 = 13. She writes down 13. Then 1 + 2 + 1 + 2 = 6 in the tens place so she writes down 6 in front of the 13.
Explain why Mindy’s reasoning is incorrect. Find the total number of cookies there are altogether.
Enter your answer & explanation in the box provided.