'Unbelievably easy' 2nd grade math problem unexpectedly causes controversy among netizens

Recently, on many social networking forums, images were shared of a very simple math problem of a second grader with subtraction operations. The problem gave the following calculation: 17 - 7 - 2 = ?

An '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 do subtraction from left to right: 17 - 7 = 10. Then take 10 - 2 = 8.

Obviously this is not a difficult problem or trick, it is 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.

Khanh Son

Source: https://vtcnews.vn/bai-toan-lop-2-de-khong-tuong-ai-ngo-khien-dan-mang-tranh-cai-ar872507.html