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