*This blog post contains Amazon affiliate links. As an Amazon Associate, I earn a small commission from qualifying purchases. *

*Want to check out my favorite Amazon items for the classroom? Check out my Amazon favorites page! *

I created this Estimate Before You Calculate Poster several years ago when I was teaching trigonometry. We did lots of word problems, and I found that my students were reaching for their calculators without even really thinking about what the problem was wanting.

I decided I wanted to encourage students to “Estimate Before You Calculate.” By this, I meant that students would think about what types of answers would be reasonable before ever punching a single number in their calculators.

For example, if I’m calculating the height of a ladder leaning against a building, a good estimate would be 8 feet. A good estimate could also be 15 feet.

If I get a result of .8 feet or 8000 feet from my calculator, that is a sign that I have likely done something wrong. I might need to check my work or my calculator’s mode.

I made a poster with our “Estimate Before You Calculate” motto, and I hung it above the calculator poster in my classroom.

I designed this Estimate Before You Calculate poster to print on 11 x 17 cardstock, my favorite way to make quick posters for my classroom.

## Free Download of Estimate Before You Calculate Poster

Estimate Before You Calculate Poster (PDF) (1383 downloads )

Estimate Before You Calculate Poster (Editable Publisher File ZIP) (742 downloads )

The font is ChunkFive Roman.

Want more posters for your classroom? Check out my posters page!

## More Free Printable Math Posters

- Concavity Posters
- ASTC Trig Quadrant Poster (CAST Diagram)
- Factorial Poster
- Math Valentine Conversation Hearts Posters
- 5 Free Printable Trigonometry Posters
- Equality and Inequality Symbols 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