Addition of Time

Mathematics

Not quite remember

I easily remember

14 seconds + 15 seconds + 13 seconds =

42 seconds

9 seconds + 17 seconds + 24 seconds =

50 seconds

18 minutes + 15 minutes =

33 minutes

22 minutes + 30 minutes =

52 minutes

3 hours + 2 hours + 1 hour =

6 hours

9 hours + 8 hours =

17 hours

2 minutes 35 seconds + 4 minutes 10 seconds =

6 minutes 45 seconds

12 minutes 35 seconds + 20 minutes 25 seconds + 21 minutes 19 seconds =

54 minutes 19 seconds

9 hours 15 minutes + 4 hours 30 minutes =

13 hours 45 minutes

3 hours 15 minutes + 2 hours 55 minutes =

6 hours 10 minutes

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