Math problem in the second grade of primary school: I do my homework at 8:30-9: 10 in the morning, so how long does it take me to do my homework in the morning? How to calculate in the form of columns? I advise you to look at it with an analog clock or with a real clock. How much time did it take? The following is my answer to you, I hope to adopt it!

It took half an hour from 8: 30 to 9: 00, which is 30 minutes.

Ten minutes passed from 9: 00 to 9: 00 10 (10).

30 minutes plus 10 minutes equals 40 minutes!

The final answer is 40 minutes. Good luck!