Worksheet #9: Conversion between hours, minutes, and seconds - Choose the correct answer.

Worksheet: Conversion between hours, minutes, and seconds

Here is the solution to each problem with detailed explanations:

---

#### 1. How many seconds are there in 5 minutes?
- Step 1: Recall that there are 60 seconds in 1 minute.
- Step 2: Multiply the number of minutes by 60:
\[
5 \text{ minutes} \times 60 \text{ seconds/minute} = 300 \text{ seconds}
\]
- Answer: \( \boxed{a) 300 \text{ seconds}} \)

---

#### 2. How many hours and minutes are there in 95 minutes?
- Step 1: Determine how many full hours are in 95 minutes. Since 1 hour = 60 minutes:
\[
95 \div 60 = 1 \text{ hour with a remainder of } 35 \text{ minutes}
\]
- Step 2: The remainder (35 minutes) is the additional time beyond the full hour.
- Answer: \( \boxed{b) 1 \text{ hour } 35 \text{ minutes}} \)

---

#### 3. What are 240 minutes in hours?
- Step 1: Recall that there are 60 minutes in 1 hour.
- Step 2: Divide the total minutes by 60:
\[
240 \div 60 = 4 \text{ hours}
\]
- Answer: \( \boxed{c) 4 \text{ hours}} \)

---

#### 4. How many minutes and seconds are there in 100 seconds?
- Step 1: Determine how many full minutes are in 100 seconds. Since 1 minute = 60 seconds:
\[
100 \div 60 = 1 \text{ minute with a remainder of } 40 \text{ seconds}
\]
- Step 2: The remainder (40 seconds) is the additional time beyond the full minute.
- Answer: \( \boxed{b) 1 \text{ minute } 40 \text{ seconds}} \)

---

#### 5. What is 600 minutes in hours?
- Step 1: Recall that there are 60 minutes in 1 hour.
- Step 2: Divide the total minutes by 60:
\[
600 \div 60 = 10 \text{ hours}
\]
- Answer: \( \boxed{c) 10 \text{ hours}} \)

---

#### 6. How many minutes are there in 540 seconds?
- Step 1: Recall that there are 60 seconds in 1 minute.
- Step 2: Divide the total seconds by 60:
\[
540 \div 60 = 9 \text{ minutes}
\]
- Answer: \( \boxed{a) 9 \text{ minutes}} \)

---

#### 7. What are 445 minutes in hours and minutes?
- Step 1: Determine how many full hours are in 445 minutes. Since 1 hour = 60 minutes:
\[
445 \div 60 = 7 \text{ hours with a remainder of } 25 \text{ minutes}
\]
- Step 2: The remainder (25 minutes) is the additional time beyond the full hours.
- Answer: \( \boxed{b) 7 \text{ hours } 25 \text{ minutes}} \)

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#### 8. How many seconds are there in 1 hour?
- Step 1: Recall that there are 60 minutes in 1 hour and 60 seconds in 1 minute.
- Step 2: Calculate the total seconds:
\[
1 \text{ hour} \times 60 \text{ minutes/hour} \times 60 \text{ seconds/minute} = 3600 \text{ seconds}
\]
- Answer: \( \boxed{a) 3600 \text{ seconds}} \)

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#### 9. How many hours are there in 5 days?
- Step 1: Recall that there are 24 hours in 1 day.
- Step 2: Multiply the number of days by 24:
\[
5 \text{ days} \times 24 \text{ hours/day} = 120 \text{ hours}
\]
- Answer: \( \boxed{b) 120 \text{ hours}} \)

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Final Answers:

1. \( \boxed{a) 300 \text{ seconds}} \)
2. \( \boxed{b) 1 \text{ hour } 35 \text{ minutes}} \)
3. \( \boxed{c) 4 \text{ hours}} \)
4. \( \boxed{b) 1 \text{ minute } 40 \text{ seconds}} \)
5. \( \boxed{c) 10 \text{ hours}} \)
6. \( \boxed{a) 9 \text{ minutes}} \)
7. \( \boxed{b) 7 \text{ hours } 25 \text{ minutes}} \)
8. \( \boxed{a) 3600 \text{ seconds}} \)
9. \( \boxed{b) 120 \text{ hours}} \)

Final Boxed Answer:
\[
\boxed{a, b, c, b, c, a, b, a, b}
\]