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Time & Calendar

These problems require knowledge of time, including the relationships between different units of time ranging from seconds to years.
 Related Resources

Interactive resources from our Math Tools project:
Math 4: Measurement
The closest match in our Ask Dr. Math archives:
Elementary Measurement
NCTM Standards:
Measurement Standard for Grades 35
Access to these problems requires a Membership.

Across Wisconsin
 Jo Wenzler

Math Fundamentals, difficulty level 2. Determine how long it will take this athletic math teacher to bike across Wisconsin (requires a little map reading). Initially a twoweek problem.
... more>>

After School Snacks
 Claire Mead

Math Fundamentals, difficulty level 3. How much money is Shawn spending on after school snacks? How long will
it take him to
save enough for a new calculator?
... more>>

Aidan's Millimeter Measurements
 Lisa Lavelle

Math Fundamentals, difficulty level 1. Calculate Aidan's height and age based on his wellbaby measurements at the doctor's office.
... more>>

All Aboard!
 Claire Mead

Math Fundamentals, difficulty level 3. How long will Sasha's train trip from Washington to Chicago take?
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A Pound of Tea
 Claire Mead

Math Fundamentals, difficulty level 3. Find out how long a pound of tea would last Hazel if she were alone.
... more>>

The Big Balloon Blowup
 Leon Roland & class

Math Fundamentals, difficulty level 3. Help Ulrike and Lars determine the number of balloons in each bag.
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Birthday Probability
 Kristina Lasher & Lisa Lavelle

Math Fundamentals, difficulty level 3. What is the likelihood that someone is born on an even or odd day of
the month? Are you more likely to be born on a prime number day or a
multiple of 3?
... more>>

Building Barns *
 Claire Mead

Math Fundamentals, difficulty level 3. How long will it take Amy's crew to build a barn?
... more>>

Choose Your Challenge
 Kristina Lasher

Math Fundamentals, difficulty level 2. Can Zak find a more precise measure of how much older his brother is than he is?
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Clock Work
 Claire Mead

Math Fundamentals, difficulty level 2. How did Maria and Sammy arrange their pencils on the clock face?
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Cupcakes, Cupcakes!
 Kristina Lasher & Terry Trotter

Math Fundamentals, difficulty level 1. Andrei needs to put icing on the cupcakes and get out the door to catch the bus. Will he and his sister be able to get them all iced in time?
... more>>

Dragons and Tigers and Hares, Oh My!
 Claire Mead

Math Fundamentals, difficulty level 3. Use clues about the Chinese calendar to determine when Lin's greatgrandfather was born
and how old he is.
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Flying Time Zones
 Lisa Lavelle

Math Fundamentals, difficulty level 3. Help me figure out what time my watch should show when I land in Denver.
... more>>

Four Dates
 Claire Mead

Math Fundamentals, difficulty level 2. Anthony explores number patterns on a calendar.
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Horsin' Around
 Claire Mead

Math Fundamentals, difficulty level 2. How long does it take Zachary to complete his journey on horseback and
on foot?
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Horton's Clover Hunt
 Lisa Lavelle

Math Fundamentals, difficulty level 4. Find out how fast Horton had to work picking clovers.
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It's Summer in Melbourne
 Claire Mead

Math Fundamentals, difficulty level 2. How many hours of sunlight does Melbourne, Australia, have on its
longest day of the year?
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A Million in Time
 Lisa Lavelle

Math Fundamentals, difficulty level 2. "Human beings can expect to live a million..." Use your conversion skills to determine which unit of time best completes this statement.
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Moons, by Jove!
 Claire Mead

Math Fundamentals, difficulty level 3. Find out how long it will take these 3 moons to return to a position
of alignment with their
planet.
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More Recess
 Kristina Lasher

Math Fundamentals, difficulty level 3. Camilla checks out a kickball while Patrick brings his handball. How
much more recess does Patrick save?
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Movie Line Madness
 Lisa Lavelle

Math Fundamentals, difficulty level 4. Determine what time it will be when Odysseus and Penelope finish taking care of their movie customers.
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Mr. W. Goes Across Australia
 Lisa Lavelle

Math Fundamentals, difficulty level 5. Help Mr. W figure out when he needs to start his trip in order to meet Mrs. W on time (requires a bit of map reading).
... more>>

Neighborhood Watch
 Lisa Lavelle

Math Fundamentals, difficulty level 3. Find out how many trips will be made around the neighborhood in this watch program.
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Odd (and Even) Dates
 Lisa Lavelle

Math Fundamentals, difficulty level 1. Can you figure out these curious dates?
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Oh, Brother!
 Lisa Lavelle

Math Fundamentals, difficulty level 1. Aidan is how many days younger than T.J.?
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Presidential Timepieces
 Mary DeYoung & class

Math Fundamentals, difficulty level 4. Develop a sense of time by exploring presidential events.
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Railroad Crossing
 Lisa Lavelle

Math Fundamentals, difficulty level 3. Determine how far apart Division Junction and Logarithm Square are, based on the time Emily and Edward Engineer cross paths.
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School, Who Has Time?
 Lisa Lavelle (old remembered puzzle)

Math Fundamentals, difficulty level 3. Given all the time we spend doing other things, how do we have time for school?
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Seasonal Probability
 Lisa Lavelle

Math Fundamentals, difficulty level 2. Calculate the probability that your birthday falls in a particular season of the year.
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Set a Date
 Lisa Lavelle (with help from Judy Ann Brown)

Math Fundamentals, difficulty level 3. Explore an interesting detail about a given date, and find six more dates with the same quality.
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So Many Salmon
 Allison Armstrong

Math Fundamentals, difficulty level 2. Armida helps researchers by tagging salmon at the Big Eagle hatchery.
Do her coworkers work faster or slower than she does?
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Taking Tolls
 Ben Lee

Math Fundamentals, difficulty level 2. How much money did the Lincoln Tunnel into Manhattan collect between 3:30 and 4:30 PM on December 30, 2003?
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Time to Get Up
 Claire Mead

Math Fundamentals, difficulty level 1. What time should Raul get up to make sure he does not miss the bus?
... more>>

Video Viewing
 Lisa Lavelle

Math Fundamentals, difficulty level 3. Just how much television will Frank and Lisa watch?
... more>>

Zero Dates
 Stephen Maurer

Math Fundamentals, difficulty level 2. Travel in time to think about dates with zeros.
... more>>
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