Calculating and Rounding Numbers

In this task, students explore some important mathematical implications of using a calculator. Specifically, they experiment with the approximation of common irrational numbers such as pi (p) and the square root of 2 (v2) and discover how to properly use the calculator for best accuracy. Other related activities involve converting fractions to decimal form and a concrete example where rounding and then multiplying does not yield the same answer as multiplying and then rounding.
Resource ID#: 42245 Type: Problem-Solving Task
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General Information

Subject(s): Mathematics
Grade Level(s): 8
Intended Audience: Educators educators, Parents
Suggested Technology: Scientific Calculator
Instructional Time: 15 Minute(s)
Keywords: Terminating decimals, non-terminating decimals, repeating decimals, rational numbers, irrational numbers, pi, square roots, converting a fraction to a decimal, calculating and Rounding Numbers, calculating, rounding, numbers, cpalms, icpalms, illustrativemathematics.org, illustrative mathematics, tasks, mathematics, math, Florida standards, resource, free, freely available, problems-based learning, student activities
Instructional Component Type(s): Problem-Solving Task
Resource Collection: Illustrative Mathematics

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