Time Conversions for 5th Grade: Hours, Minutes, Seconds
Time conversions are used when switching between seconds, minutes, hours, and days. In Grade 5, students convert between these units using the relationships 60 seconds = 1 minute, 60 minutes = 1 hour, and 24 hours = 1 day. To convert from a smaller unit to a larger unit, divide; to convert from a larger unit to a smaller unit, multiply.
Time conversions appear in everyday life: how many minutes is 120 seconds? How many seconds are in 3 minutes? How many hours are in 1440 minutes? Understanding these conversions helps students solve elapsed-time problems and interpret schedules.
DETAILED EXPLANATION
1 minute = 60 seconds. 1 hour = 60 minutes = 3,600 seconds. 1 day = 24 hours = 1,440 minutes.
Smaller → Larger: divide (e.g., 120 seconds ÷ 60 = 2 minutes).
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Larger → Smaller: multiply (e.g., 3 hours × 60 = 180 minutes).
WORKED EXAMPLES WITH STEP BY STEP SOLUTIONS
Example 1
Convert 120 seconds to minutes.
Solutions:
Step 1: 1 minute = 60 seconds. Divide: \(120 \div 60 = 2\).
Step 2: 120 seconds = 2 minutes.
Answer: 2 minutes
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Example 2
Convert 3 hours to minutes.
Solutions:
Step 1: 1 hour = 60 minutes. Multiply: \(3 \times 60 = 180\).
Step 2: 3 hours = 180 minutes.
Answer: 180 minutes
Example 3
Convert 1,440 minutes to hours.
Solutions:
Step 1: 1 hour = 60 minutes. Divide: \(1{,}440 \div 60 = 24\).
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Step 2: 1,440 minutes = 24 hours (1 day).
Answer: 24 hours (1 day)
Example 4
Convert 5 minutes to seconds.
Solutions:
Step 1: 1 minute = 60 seconds. Multiply: \(5 \times 60 = 300\).
Answer: 300 seconds
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