Convert 2 Hours to Seconds: Solving Time Unit Equation

Q: Why can't I just multiply 2 hours by 60 to get seconds?

Because 60 is the conversion from hours to minutes, not hours to seconds! You need two steps: hours → minutes (× 60), then minutes → seconds (× 60 again).

Q: How do I remember that 1 hour equals 3600 seconds?

Think: 1 hour = 60 minutes, and 1 minute = 60 seconds. So $ 60 \times 60 = 3600 $ seconds per hour!

Q: What if I get confused about which direction to convert?

Bigger units to smaller units = multiply. Hours are bigger than seconds, so multiply! Smaller to bigger units = divide.

Q: How can I check if 7200 seconds is reasonable for 2 hours?

1 hour = 3600 seconds (that's a lot!)2 hours should be twice as much2 × 3600 = 7200 ✓

Time Conversion with Multi-Step Calculations

$2hr=?sec$

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Understand the problem

$2hr=?sec$

Step-by-step solution

To solve this problem, we'll follow these steps:

Step 1: Convert hours to minutes.
Step 2: Convert minutes to seconds.

Now, let's work through each step:

Step 1: Convert 2 hours to minutes. Since there are 60 minutes in an hour, multiply the number of hours by 60:

$2 \text{ hours} \times 60 \text{ minutes/hour} = 120 \text{ minutes}$ .

Step 2: Convert 120 minutes to seconds. Since there are 60 seconds in a minute, multiply the number of minutes by 60:

$120 \text{ minutes} \times 60 \text{ seconds/minute} = 7200 \text{ seconds}$ .

Therefore, the solution to the problem is $\boxed{7200}$ seconds.

Final Answer

$7200$

Key Points to Remember

Essential concepts to master this topic

Unit Chain: Hours to minutes, then minutes to seconds
Technique: Multiply by 60 twice: 2 × 60 × 60 = 7200
Check: Divide result by 3600: 7200 ÷ 3600 = 2 hours ✓

Common Mistakes

Avoid these frequent errors

Converting directly using wrong conversion factor
Don't multiply hours by 60 to get seconds = 120 wrong answer! This skips the minutes step and uses the wrong conversion factor. Always convert hours to minutes first (× 60), then minutes to seconds (× 60 again).

Practice Quiz

Test your knowledge with interactive questions

$$ 7min=?hr $$

FAQ

Everything you need to know about this question

Why can't I just multiply 2 hours by 60 to get seconds?

Because 60 is the conversion from hours to minutes, not hours to seconds! You need two steps: hours → minutes (× 60), then minutes → seconds (× 60 again).

Is there a faster way to convert hours to seconds?

Yes! Since 1 hour = 3600 seconds, you can multiply hours directly by 3600. So $2 \times 3600 = 7200$ seconds.

How do I remember that 1 hour equals 3600 seconds?

Think: 1 hour = 60 minutes, and 1 minute = 60 seconds. So $60 \times 60 = 3600$ seconds per hour!

What if I get confused about which direction to convert?

Bigger units to smaller units = multiply. Hours are bigger than seconds, so multiply! Smaller to bigger units = divide.

How can I check if 7200 seconds is reasonable for 2 hours?

1 hour = 3600 seconds (that's a lot!)
2 hours should be twice as much
2 × 3600 = 7200 ✓

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