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Two Answers are Better than One

What powerful mathematical tool do you use everyday? If you have ever considered how much food you can eat and still leave room for dessert, or made a rough calculation of how long it will take to travel to school, you are using estimates to help guide and inform your decisions.

Author(s):

Steve Frolking, Steve FrolkingLynn Rosentrater, Lynn Rosentrater

Date Accepted: 1999-07-17 Grade Group: High School (9-12) Benchmarks: M1.4.8 M3.4.4 S15.4.6 Keywords: estimating back-of-the-envelope calculation significant figures checking your work Microsoft Word: 04_25_99_2.docx PDF Document: 04_25_99_2.pdf