Math with Bad DrawingsCartoon Archive

Not with a Bang

January 6, 2017

As a city burns in the background, one figure admits rounding 8% interest (×1.08) down to ×1.

Content note: Mild disaster imagery (burning city).

Use this cartoon

Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.

Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-01-06-not-with-a-bang/ (CC BY-NC 4.0)
Transcript

[Caption] "This is how the world shall end: not with a bang, but with a rounding error."

A: "It said 8% interest... that's the same as multiplying by 1.08... so I rounded to 1!"

B: "You reckless fool..."

[Background: city in flames]

Topics
Number & Arithmetic › Rounding & EstimationNumber & Arithmetic › PercentagesFunctions › Exponential GrowthApplied Math › Finance
Level
Middle SchoolHigh School
Themes
Money & ShoppingFamous QuotesCommon MistakesLiterature & Myth