1. The students braved the cold and ran 60 meters. Wang Le took 12 second, Zhang Peng took 10 second and Xin Li took 13 second. Who runs fastest and who runs slowest?

2. Lu Cheng arrived at school at 7: 59 in the morning at 10 second, and Zhang Lan arrived at school at 7: 59: 38. Which of them got to school first and how early?

3. 100 meter race, Xiaoming is 3 seconds faster than Xiao Fang, and Xiao Fang is 2 seconds slower than Xiao Gang. Can you rank them three?

The present time is 4: 20. What time will it be after 1: 30?

It's 2: 30 in the afternoon, what time was it 40 minutes ago?

6. It takes five seconds for Zhao Ning to dictate a question. How many questions can he dictate in six minutes?

7. How long did it take for students to go for a spring outing, leaving at 8: 20 in the morning and returning at 3: 20 in the afternoon?