Mathematics Grade 5 15 min

Convert time units

Convert time units

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1

Introduction & Learning Objectives

Learning Objectives Identify the standard units of time: seconds, minutes, hours, days, weeks, and years. Recall the conversion factors between common time units (e.g., 60 seconds = 1 minute). Convert larger units of time into smaller units using multiplication. Convert smaller units of time into larger units using division. Solve real-world problems involving the conversion of time units. Perform multi-step conversions between time units (e.g., days to minutes). Have you ever wondered how many minutes are in your favorite movie, or how many hours until your birthday? 🎂 Let's find out how to measure and change time! In this lesson, you'll learn how to convert between different units of time like seconds, minutes, hours, and days. Understanding these conversions h...
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Key Concepts & Vocabulary

TermDefinitionExample SecondThe basic unit of time, often used for very short durations.It takes about 1 second to say 'one thousand one'. MinuteA unit of time equal to 60 seconds.A typical song lasts about 3 minutes, which is 180 seconds. HourA unit of time equal to 60 minutes.School usually starts at 8 o'clock and ends at 3 o'clock, which is 7 hours. DayA unit of time equal to 24 hours, representing one full rotation of the Earth.There are 7 days in a week. WeekA unit of time equal to 7 days.Most school breaks last for one or two weeks. YearA unit of time equal to 365 days (or 366 in a leap year), representing one full orbit of the Earth around the sun.Your birthday comes once every year. Conversion FactorA number used to change one unit of measurement to another.The...
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Core Formulas

Seconds to Minutes / Minutes to Seconds $1 \text{ minute} = 60 \text{ seconds}$ To convert minutes to seconds, multiply by 60. To convert seconds to minutes, divide by 60. Minutes to Hours / Hours to Minutes $1 \text{ hour} = 60 \text{ minutes}$ To convert hours to minutes, multiply by 60. To convert minutes to hours, divide by 60. Hours to Days / Days to Hours $1 \text{ day} = 24 \text{ hours}$ To convert days to hours, multiply by 24. To convert hours to days, divide by 24. Days to Weeks / Weeks to Days $1 \text{ week} = 7 \text{ days}$ To convert weeks to days, multiply by 7. To convert days to weeks, divide by 7.

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Sample Practice Questions

Challenging
A timer shows that 10,800 seconds have passed. How many hours is this?
A.2 hours
B.3 hours
C.4 hours
D.1.5 hours
Challenging
A recipe says to bake a pie for 1.5 hours. How many minutes is this?
A.75 minutes
B.150 minutes
C.90 minutes
D.100 minutes
Challenging
A satellite orbits Earth once every 90 minutes. How many complete orbits does it make in one 24-hour day?
A.12 orbits
B.15 orbits
C.16 orbits
D.24 orbits

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