5th Grade Time Worksheet with time calculation exercises.

To solve the problems in the worksheet, we need to calculate the missing values for each row based on the given information. Let's go through each row step by step.

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Row (i)

- Starting Time: 2:05 p.m.
- Duration: ?
- Finishing Time: 3:40 p.m.

#### Calculation:
1. Convert the times to a 24-hour format for easier calculation:
- Starting Time: 2:05 p.m. = 14:05
- Finishing Time: 3:40 p.m. = 15:40

2. Calculate the duration:
- Duration = Finishing Time - Starting Time
- Duration = 15:40 - 14:05
- Break it down:
- Minutes: 40 - 5 = 35 minutes
- Hours: 15 - 14 = 1 hour
- Total Duration = 1 hour 35 minutes

#### Answer:
- Duration: 1 hour 35 minutes

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Row (ii)

- Starting Time: ?
- Duration: 4 hours 50 minutes
- Finishing Time: 7:15 a.m.

#### Calculation:
1. Convert the finishing time to a 24-hour format:
- Finishing Time: 7:15 a.m. = 07:15

2. Subtract the duration from the finishing time:
- Duration = 4 hours 50 minutes
- Starting Time = Finishing Time - Duration
- Starting Time = 07:15 - 4:50

3. Perform the subtraction:
- Minutes: 15 - 50 is not possible, so borrow 1 hour (60 minutes):
- 15 + 60 = 75 minutes
- 75 - 50 = 25 minutes
- Hours: Since we borrowed 1 hour, 7 - 1 - 4 = 2 hours
- Starting Time = 2:25 a.m.

#### Answer:
- Starting Time: 2:25 a.m.

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Row (iii)

- Starting Time: 1820 hours
- Duration: 7 hours 10 minutes
- Finishing Time: ?

#### Calculation:
1. Convert the starting time to a 24-hour format:
- Starting Time: 1820 hours = 18:20

2. Add the duration to the starting time:
- Duration = 7 hours 10 minutes
- Finishing Time = Starting Time + Duration
- Finishing Time = 18:20 + 7:10

3. Perform the addition:
- Minutes: 20 + 10 = 30 minutes
- Hours: 18 + 7 = 25 hours
- Since 25 hours exceeds 24 hours, convert it to the next day:
- 25 hours = 1 day + 1 hour
- Finishing Time = 01:30 (next day)

#### Answer:
- Finishing Time: 01:30 hours (next day)

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Row (iv)

- Starting Date: 1 October
- Duration: 45 days
- Finishing Date: ?

#### Calculation:
1. Count 45 days starting from 1 October:
- October has 31 days:
- Days remaining in October = 31 - 1 = 30 days
- Remaining days after October = 45 - 30 = 15 days
- November has 30 days:
- 15 days into November = 15 November

#### Answer:
- Finishing Date: 15 November

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Row (v)

- Starting Date: 1 July
- Duration: 5 weeks 2 days
- Finishing Date: ?

#### Calculation:
1. Convert the duration to days:
- 5 weeks = 5 × 7 = 35 days
- Total days = 35 + 2 = 37 days

2. Count 37 days starting from 1 July:
- July has 31 days:
- Days remaining in July = 31 - 1 = 30 days
- Remaining days after July = 37 - 30 = 7 days
- August has 31 days:
- 7 days into August = 7 August

#### Answer:
- Finishing Date: 7 August

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Final Answers:

1. Row (i): Duration = 1 hour 35 minutes
2. Row (ii): Starting Time = 2:25 a.m.
3. Row (iii): Finishing Time = 01:30 hours (next day)
4. Row (iv): Finishing Date = 15 November
5. Row (v): Finishing Date = 7 August

Boxed Final Answer:
\[
\boxed{
\begin{array}{l}
\text{(i) 1 hour 35 minutes} \\
\text{(ii) 2:25 a.m.} \\
\text{(iii) 01:30 hours (next day)} \\
\text{(iv) 15 November} \\
\text{(v) 7 August}
\end{array}
}
\]