Question

18ч 46 мин-13ч 29 мин= 8ч 15 мин- 35 мин= 40 мин 35 с - 20 мин 48 с= 14ч 39 мин+18ч 46 мин= 1 ч - 29 мин= 11 ч - 29 мин =

Answer 1

11ч-29 мин=10ч31мин
8ч 15 мин- 35 мин=7ч 40мин
40 мин 35 с - 20 мин 48 с=19 мин 47 с
14ч 39 мин+18ч 46 мин=33ч 25 мин
1 ч - 29 мин=31мин

Answer 2

1) 5 ч 17 мин
2) 7 ч 40мин
3) 19 мин 47 с
4) 33 ч 35 мин
5) 31 мин
6) 10 ч 31 мин

Answer 3

To calculate the given expressions, let's break down each calculation step by step:

1. 18ч 46 мин - 13ч 29 мин: To subtract the given times, you subtract the hours and then subtract the minutes separately. Here's how you can do it:

18 hours - 13 hours = 5 hours 46 minutes - 29 minutes = 17 minutes

So, 18ч 46 мин - 13ч 29 мин = 5ч 17 мин.

2. 8ч 15 мин - 35 мин: Similarly, subtract the hours and then subtract the minutes:

8 hours - 0 hours (35 minutes is less than 1 hour) = 8 hours 15 minutes - 35 minutes = -20 minutes (negative because the result is less than 0)

So, 8ч 15 мин - 35 мин = 8ч - 20 мин.

3. 40 мин 35 с - 20 мин 48 с: Again, subtract the minutes and then subtract the seconds:

40 minutes - 20 minutes = 20 minutes 35 seconds - 48 seconds = -13 seconds (negative because the result is less than 0)

So, 40 мин 35 с - 20 мин 48 с = 20 мин - 13 с.

4. 14ч 39 мин + 18ч 46 мин: To add the given times, you add the hours and then add the minutes separately:

14 hours + 18 hours = 32 hours 39 minutes + 46 minutes = 85 minutes

Since 85 minutes is greater than 60 minutes, you can convert it to hours and minutes by dividing 85 by 60: 85 minutes ÷ 60 = 1 hour and 25 minutes

So, 14ч 39 мин + 18ч 46 мин = 32ч 1 мин 25 с.

5. 1 ч - 29 мин: Subtract the minutes from the hour:

1 hour - 0 hour (29 minutes is less than 1 hour) = 1 hour 0 minutes - 29 minutes = -29 minutes (negative because the result is less than 0)

So, 1 ч - 29 мин = 1 ч - 29 мин.

6. 11 ч - 29 мин: Subtract the minutes from the hour:

11 hours - 0 hour (29 minutes is less than 1 hour) = 11 hours 0 minutes - 29 minutes = -29 minutes (negative because the result is less than 0)

So, 11 ч - 29 мин = 11 ч - 29 мин.

Thus, the calculations are as follows:

- 18ч 46 мин - 13ч 29 мин = 5ч 17 мин - 8ч 15 мин - 35 мин = 8ч - 20 мин - 40 мин 35 с - 20 мин 48 с = 20 мин - 13 с - 14ч 39 мин + 18ч 46 мин = 32ч 1 мин 25 с - 1 ч - 29 мин = 1 ч - 29 мин - 11 ч - 29 мин = 11 ч - 29 мин