Powers And Roots
Bayani Gaba-gaba
Squaring, cubing and taking roots are among the most-used operations in all of mathematics. They turn up the moment you work with area and volume, and they are the gateway to indices, standard form and Pythagoras' theorem. Being quick and accurate with powers and roots saves time in almost every paper.
In this lesson you will calculate squares, cubes and higher powers, and find square roots, cube roots and other roots, both by recognising common values and by using a calculator efficiently. You will also learn to estimate a root that is not exact, which is a frequent exam check.
Manufura
- Calculate with the following: squares square roots cubes cube roots other powers and roots of numbers.
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- What is the value of 2^5? A. 10 B. 25 C. 32 D. 64 Answer: C
- What is the value of (-3)^2? A. -9 B. -6 C. 6 D. 9 Answer: D
- What is the cube root of 125? A. 5 B. 15 C. 25 D. 41.7 Answer: A
- Between which two whole numbers does √50 lie? A. 5 and 6 B. 6 and 7 C. 7 and 8 D. 8 and 9 Answer: C
- What is the value of 4^3? A. 12 B. 16 C. 43 D. 64 Answer: D
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Littattafan da ake ba da shawarar karantawa
Ƙarin koyo daga tushe na buɗe
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Sashen littafi
The Real Numbers
Simplify expressions with square roots
"Elementary Algebra: The Real Numbers" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/elementary-algebra/pages/1-8-the-real-numbers. Access for free at https://openstax.org/books/elementary-algebra/pages/1-introduction
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