Question

12 ч 51 мин +9ч 45 мин = 11 ч 15 мин – 6ч 20 мин =45 мин 18 c + 11 мин 49 c =6 мин 28 с - 2 мин 30 c =13 сут. 16 ч+ 12 сут. 8 ч=13 сут. 8 ч- 10 сут. 10 ч= 1г. 6 мес. +2 г. 11 мес. = 2 г. 4 мес. - 11 мес. =​

Answer 1

1)20ч54м

2)4ч55м

3)33м29с

4)3м58с

5)26 сут

6)7сут10ч

7)4г5 мес

8)1г5мес

Answer 2

Ответ:

22 ч 40 мин

4 ч 55 мин

57 мин 7 с

3 мин 58 с

16 сут.

2 сут. 22 ч

4 г. 5 мес.

1 г. 7 мес.

Answer 3

Let's solve these arithmetic problems step by step:

1. 12 ч 51 мин + 9 ч 45 мин: To add hours and minutes, we'll start with the minutes: 51 mins + 45 mins = 96 mins. Since 60 mins = 1 hour, we can convert 96 mins to hours and minutes: 96 mins ÷ 60 mins = 1 hour 36 mins. Now, add the hours: 12 hours + 9 hours = 21 hours. So, the result is 21 ч 36 мин.

2. 11 ч 15 мин – 6 ч 20 мин: Again, start with the minutes: 15 mins - 20 mins = -5 mins. Since we can't have negative minutes, we need to borrow an hour: 11 hours - 1 hour = 10 hours. Now, add the corrected minutes: 10 hours + 59 mins = 10 ч 59 мин.

3. 45 мин 18 c + 11 мин 49 c: To add minutes and seconds, start with the seconds: 18 s + 49 s = 67 s. Since 60 s = 1 min, we can convert 67 s to minutes and seconds: 67 s ÷ 60 s = 1 min 7 s. Now, add the minutes: 45 mins + 11 mins + 1 min = 57 mins. So, the result is 57 мин 7 c.

4. 6 мин 28 c - 2 мин 30 c: Start with the seconds: 28 s - 30 s = -2 s. We can't have negative seconds, so we need to borrow a minute: 6 mins - 1 min = 5 mins. Now, add the corrected seconds: 5 mins + 59 s = 5 мин 59 c.

5. 13 сут. 16 ч + 12 сут. 8 ч: To add days and hours, start with the hours: 16 hours + 8 hours = 24 hours. Since 24 hours = 1 day, we can convert 24 hours to days and hours: 24 hours ÷ 24 hours = 1 day. Now, add the days: 13 days + 12 days + 1 day = 26 days. So, the result is 26 сут. 0 ч.

6. 13 сут. 8 ч - 10 сут. 10 ч: To subtract days and hours, start with the hours: 8 hours - 10 hours = -2 hours. We can't have negative hours, so we need to borrow a day: 13 days - 1 day = 12 days. Now, add the corrected hours: 12 days + 22 hours = 12 сут. 22 ч.

7. 1 г. 6 мес. + 2 г. 11 мес: To add years and months, start with the months: 6 months + 11 months = 17 months. Since 12 months = 1 year, we can convert 17 months to years and months: 17 months ÷ 12 months = 1 year 5 months. Now, add the years: 1 year + 2 years + 1 year = 4 years. So, the result is 4 г. 5 мес.

8. 2 г. 4 мес. - 11 мес.: Start with the months: 4 months - 11 months = -7 months. We can't have negative months, so we need to borrow a year: 2 years - 1 year = 1 year. Now, add the corrected months: 1 year + 5 months = 1 г. 5 мес.

I hope these answers help! If you have any more questions or need further assistance, feel free to ask.