★ It takes () seconds for the second hand to walk 1, () seconds for the second hand to walk 1, and () seconds for the second hand to walk once, that is, () minutes.

★ 1 minute takes () minutes to walk around, and 1 minute takes () minutes to walk around, which is () hours.

1、 ? Fill it out.

180 seconds = () minutes 240 minutes = () hours 2 hours = () minutes.

2. fill in ">"

90 seconds 02 minutes 6 hours 0600 minutes 100 seconds 1 minute 180 minutes 03 hours.

3. Fill in the appropriate units.

A class of 40 (? )。 ? At the sports meeting, Zhao Weiyong 13 (? ) Run 50 meters.

(3) Pulse jumps 8 times, using 6 (? )。 (4) light light blue used 3 (? )。

4. Fill in the time displayed on the clock face first, and then calculate the elapsed time.

It takes 45 minutes for students to visit the museum. They arrived at 8: 30 sharp. When did they leave?

6. A train was supposed to arrive at Nanjing Station at 10: 50, and now it is 25 minutes late. What time does the train arrive?