Andre says that 5 3/4 + 2 1/2 =7 1/2 because 7 4/8 = 8 1/2. Identify his mistake. Draw a picture to prove that he is wrong.
Answer (2)
5 4 3 + 2 2 1 = 5 4 3 + 2 4 2 = 7 4 5 = 8 4 1 mi s t ak e : 5 4 3 + 2 2 1 = 5 4 3 + 2 4 1 = 5 + 2 + 4 + 4 3 + 1 = 7 8 4 = 7 2 1
Andre's mistake lies in incorrectly calculating 5 4 3 + 2 2 1 as 7 2 1 . The correct sum is actually 8 4 1 . A visual representation can help clarify how these numbers combine to yield the right answer.
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