Units of time

Units of time

Lessons

In this lesson, we will learn:

  • The different units of time: years, months, weeks, days, hours, minutes, and seconds
  • The units of time for many years: decades, centuries, millennia
  • How to convert between the different units of time

Notes:

  • Units of time are intervals of time that measure duration
    • The most common units of time that we see are: years, months, weeks, days, hours, minutes, and seconds

Time: Units of Time

    • Even longer intervals of time include: decades, centuries, and millennia
Time: Units of Time

  • When converting between different units of time:
    • Multiply when changing from bigger to smaller time units
    • Divide when changing from smaller to bigger time units
    • Use the conversion list of equivalent times:

Time: Units of Time

  • Examples:

Time: Units of Time
  • Introduction
    Introduction to Units of Time:
    a)
    What are the different units of time?

    b)
    When to multiply or divide when converting units of time.

    c)
    How to convert between different units of time.


  • 1.
    Common Durations of Time
    Which unit of time should you use to describe the following?
    • Listening to a song?
    • Watching a movie?
    • Typing a question into a website browser?

  • 2.
    Converting Units of Time in a Table
    Fill in the table to convert between different units of time.
    a)
    Minutes and seconds
    Time: Units of Time

    b)
    Hours and minutes
    Time: Units of Time

    c)
    Days and hours
    Time: Units of Time

    d)
    Weeks and days
    Time: Units of Time


  • 3.
    Converting Between Different Units of Time
    Fill in the blanks by converting the times
    a)
    Between seconds, minutes and hours
    5 min = ____s \qquad ____min = 2 h \qquad 1 h = ____s \qquad ____h = 240 min

    b)
    Between hours, days and weeks
    4 d = ____h \qquad ____wk = 35 d \qquad 1 wk = ____h \qquad ____h = 3 d

    c)
    Between months, years, decades, centuries and millennia
    2 y = ____mo \qquad __decades = 20 y \qquad 5 centuries =__y \qquad __millennia = 8000 y


  • 4.
    Comparing Different Units of Time
    Which amount of time is longer? Show your work; convert times into the same units to compare.
    a)
    90 min OR 1 h 40 min

    b)
    267 s OR 5 min 4

    c)
    126 h OR 4 d 21 h

    d)
    28 d OR 3 wk 5 d

    e)
    30 mo OR 2 y 5 mo