Tag: 5.NBT

Mental math tricks – part 2

36 x 25 = 900     480 x 25 =12,000    924 x 2.5 = 2,310 Can you see any tricks for doing these calculations in your head? The activity: ImpressYourParents-part2.pdf

Refugees from Ukraine

Civilian Ukrainians are fleeing the war zone in order to remain safe and find food and housing.  How do these numbers compare with other tragic evacuations. While interpreting graphics and working with these huge numbers, bring your student’s opinions and concerns into your math class.

February 22, 2022

Why do you suppose we are posting this date as a topic for YummyMath? What do you think is so special about this date? Does this happen often?  When might a similar day occur?

Spider-Man continues

How much did it cost to make?
How much will it gross?
Is the Spider-Man phenomena a guarantee for success?
How would you compare all of the Spider-Man movies?

Super Bowl Numerals

Introduce Roman numerals to your class.  In this activity students learn the rules for evaluating Roman numerals, decipher copyright dates, see how Roman numerals are used today, and do some strange looking arithmetic and surprisingly easy computation.

Bowl by the hour or the game?

Students consider the posted pricing of this bowling alley. What must they consider when choosing how to pay? What do you expect will be the best deal? How do you know?

Holiday shipping

These two companies carry a lot of our packages. What can you tell about them by the numbers? Does delivering a little percent late really equal to not many packages late?

Hanukkah is almost here!

Egad, Hanukkah begins this year on Sunday evening, November 28th. I think it was in December last year. Why isn’t it always on the same date? Students look at the Hebrew calendar and appreciate the incredible mathematics involved in creating a…

Lots of pieces

Brian has a lot of puzzles.  His family must love working on them. What do you wonder about his puzzles? What do you notice? Make an educated guess, about how many pieces are in all of these puzzles?  Can you…

Holiday soda displays

The holidays are coming! We found these timely soda displays made up entirely of 12-pack of Coca-Cola products. What questions do you have? Clicking on either image will show them larger in their own windows. Start out the activity by…

USPS needs help!

Students learn how the Postal Service is funded and try to decide how the USPS could earn more or spend less in their operation.  They finally get to think about whether the post office should be a government run service or a self-sustaining business.