2, exactly 60 minutes (that is, from 5: 28 to 6: 27, just one hour)
3, 7: 20 (because each grid is 30 degrees, four to seven grids are 90 degrees, and 20 minutes is one-third of an hour, that is, one-third of 7: 00 to 8: 00, that is, 10 degrees).
4, 22 minutes, because the coincidence must be between 4 and 5, that is, between 20 and 25 (exactly less than 22 minutes, but 2 1 minute has passed, you asked for minutes, so you said 22).
5, 14 minutes (because the minute hand can't pass through 3 on both sides of 3, we set 90 degrees between 3 o'clock and 12, while the minute hand at 3 o'clock is 84 degrees and the hour hand is 97 degrees. The error of 90 degrees from 3 o'clock 1 degree can only be 3 o'clock.
6, no, because when the clock strikes 58, it is 60 minutes on time, and when there are 2 minutes left at the end of the clock, it is 2 minutes on time. 2 minutes on the clock does not mean 2 minutes on time.
7, about 5: 44 and 5: 1 1.
8, accurate, (the standard time is 3600 seconds per hour, that is to say, when the wall clock reaches 3570 seconds, it is 1 hour, while the watch just reaches 3600 seconds, so it is accurate)
9. The exact time is 10: 3 1 minute (3 minutes per hour, 6 hours and 20 minutes before 10: 50 and 4: 30, that is, 6 1/3 hours. One third of 6 times 3 equals 19 points, and 65438+50 points minus 19 points.
1. 16 points 12 points
2. It took 60 points
3.7: 00 18
4.4: 22
5.3: 00 14: 00
6. yes.
7.5, 1 1, 5: 44.
8. accurate.
9. 10 at 3 1.