"It is highly recommended to cancel these wordplay topics, math is not a brain teaser!" This fourth-grade math problem made college student Kobayashi dizzy, last night's homework to tutor children was wrong by the teacher today, Kobayashi can't help but wonder to himself: Can't I be a college student, can't I tutor the fourth-grade homework?
Topic: A signal light flashes 5 times with 20 seconds, so how many seconds does it take to flash 40 times? Kobayashi's son is very poor in mathematics, thinking about it for half a day will not be, such a simple problem you will not? Kobayashi, as a mother, was angry, but there was no way but to tell her son that 40 ÷ (20÷5) = 10 seconds, and the next day he was wrongly judged by the teacher.
When Kobayashi looked at her son's homework, she found that this question was wrong, and she was very puzzled, but after watching it for half a day, she did not find anything wrong? It seems that there is a reason for the son's poor math, everyone says is it not? #I'm going to make micro-headlines##教育听我说 #
![Anshan ~ the city center is probably the most comfortable and beautiful place ~ although the building is not high, but very comfortable # Anshan headlines #[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)