Mental Calculation - 27/1

1h 15min + 4h 25min =

3h 5min + 2h 17min =

3h 50min + 4h 25min =

6h 35min + 4h 45min =

1h 55min + 5min =

4 hours 20 minutes - 1 hour 50 minutes = ...h ... min

6 hours 40 minutes - 1 hour 15 minutes = ... h ... min

58 minutes 16 seconds - 17 minutes 12 seconds = .. min ... sec

75 minutes - 1 hour = ... minutes

Mark spent 3 hours hiking one afternoon. How many minutes did he spend hiking?