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This year, I am trying out Estimation 180 in my Math Concepts class, a class for 9th graders not yet ready for Algebra 1. After two weeks of giving students the formula for percent error EVERY SINGLE DAY, I finally made an Estimation 180 Poster!
This poster was inspired by a tweet from Lisa Bejarano.
Here’s my version of the Estimation 180 Poster. I printed the poster on 11 x 17 cardstock.

Want a copy of my Greek Alphabet Poster as well?
Free Download of Estimation 180 Poster
Estimation 180 Poster (PDF) (64 downloads)
Estimation 180 Poster (Editable Publisher File ZIP) (47 downloads)
If you want even more posters for your math classroom, check out my posters page!
More Free Printable Math Posters
- Modular Origami – Sonobe Classroom Display
- Unit Circle Magnets
- Trig Functions Posters
- Parts of a Radical Poster
- Roman Numerals Poster
- Parts of a Right Triangle Poster
- Estimate Before You Calculate Poster
- Pythagorean Theorem Poster
- Naming Polynomials Poster
- Math Joke of the Week Posters
- Powers Posters – Powers of 2 to 9
- Math Alphabet Podium Name Sign