How did they figure these tips?

2023-11-20 09:44:33

How did they figure these tips?


receipt-smudged 


Act I:  This restaurant bill has the suggested tips, but they are smudged out.  What should they be?  Consider having students make a fast 5 to 10 -second prediction in their heads. 

Act II:  Students work - for few minutes on own, then with partners. Have groups or partners share how you figured these out.  No need to have every group share, focus on, and compare and contrast, or connect a few different student strategies. 

Act III:  Reveal the un-smudged receipt.  How did they figure the tip ... before or after the tax?  Why does it matter?   What percent greater are tips that are after tax compared to tips that are before tax? Sequel: If kids finish early, ask them to find other tip amounts for this bill, such as 10%, 25% or other.  Or if a customer didn't want to think and just left a ten dollar bill, what percent is that?


Activity Solutions & Supporting Materials
Share this:
Comments (0)
    Display 1 - 10 Of total 0
    Will the new iPhone sales be huge?
    Apple just announced their new, 10th anniversary...
    Red Green Bitcoin
      ðŸ“‰ In this activity, students will expl...
    Guacamole for Cinco de Mayo
    Cinco de Mayo (May 5th) is an annual celebration...
    Mallie's latest Big Burger
    It's time to treat your students to ratios, ...
    Banana Art "Comedian"
    What do you think this...
    Are baseball games getting longer?
      March 28th, 2018 was opening day for t...
    How many movies can you see in one day?
    Robert Kaplinsky at robertkaplinsky.com shared thi...
    Why isn't the World Cup happening now?
    The World Cup Finals is only played every 4 ...
    My teacher says this stream is parabolic. Is he correct?
    Instead of asking students to just believe wha...