Learning Mathematics: Number Sense, Radicals, and Evaluating Expressions
Explore number sense routines, simplifying radicals, and evaluating expressions in mathematics. Understand the order of operations, including working with square roots and exponents. Discover how to calculate cube roots, fourth roots, and nth roots efficiently using a graphing calculator.
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Presentation Transcript
08/27/2019 Agenda Number Sense Routine https://www.youtube.com /watch?v=Ef2gOQbDv7M Simplifying radicals Number Sense Routine 2x + 0.5 = 6.5 3x 0.5 = 8.5 5x + 3 = 8.5 Student/Teacher dialog
In the order of operations, a square root symbol is like an exponent. Everything under the radical is treated as if it were in parentheses. ( ) 3 = 5 3 5
Evaluate the expression + 2 16 5 ( ) 4 2 + = + = + = 2 16 5 5 8 5 13
Evaluate the expression + + 9 16 7 + + = + = + = 9 16 7 25 7 5 7 12
Cube roots, fourth roots and nth roots can also be found. These are easily done on the graphing calculator using the MATH key.
