Recently, on many social networking forums, images were shared of a very simple math problem of a second grader with subtraction operations. The problem was given as follows: 17 - 7 - 2 = ?
The 'unbelievably easy' second grade math problem unexpectedly caused controversy among netizens.
After the problem was posted, many people found two different answers: 12 and 8, along with two different solutions.
- Method 1: Subtract 7 - 2 = 5. Then take 17 - 5 = 12.
- Method 2: Students subtract from left to right: 17 - 7 = 10. Then take 10 - 2 = 8.
Obviously this is not a difficult problem or trick, just simply applying the general rule, but when shared, it attracted the attention and controversy of netizens. So, in your opinion, is the most correct answer to this calculation 12 or 8? Leave your answer in the comment section below.
Source: https://vtcnews.vn/bai-toan-lop-2-de-khong-tuong-ai-ngo-khien-dan-mang-tranh-cai-ar872507.html
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