Simplifying Irrational Square Roots

Mr. Buffington introduces irrational square roots, explaining how to find exact and approximate values. He emphasizes the importance of memorizing perfect squares and explains the rule of radicals, which allows the separation of square roots through multiplication. The video demonstrates simplifying square roots by identifying perfect square factors and provides methods for estimating square roots using known perfect squares. The lesson concludes with practice problems and a reminder to memorize perfect squares for solving square root problems efficiently.

What are perfect squares?

• Numbers that can be expressed as the product of two equal integers

• Numbers that result from squaring fractions

• Prime numbers only

• Numbers that cannot be divided evenly

How can you simplify the square root of a product?

• By dividing the square root of the total product

• By separating it into the multiplication of the square roots of each factor

• By multiplying the square roots of each factor

• By adding the square roots of each factor

What is an irrational square root?

• A square root that equals a prime number

• A square root that results in a repeating decimal

• A square root that can be expressed as a simple fraction

• A square root that cannot be simplified into a fraction or repeating decimal

Tags

CCSS.8.NS.A.1

How do you find the exact value of an irrational square root?

• By converting it into a fraction

• By using a calculator only

• By simplifying it using perfect square factors

• By guessing and checking

What is the approximate value of the square root of 72?

• 8.49

• 7.5

• 9.00

• 8.00

Tags

CCSS.8.NS.A.2

How can you estimate the square root of a number?

• By finding its closest perfect square

• By using a calculator

• By multiplying it by 2

• By comparing it to the square roots of perfect squares it falls between

Tags

CCSS.8.NS.A.2

What is the simplified form of the square root of 32?

• 4 * sqrt(2)

• sqrt(16) * sqrt(2)

• 6 * sqrt(2)

• 5.66

What is the square root of 36 simplified?

• 6

• 18

• sqrt(6)

• 12

Tags

CCSS.8.EE.A.2

Why is it important to memorize perfect squares?

• To solve square roots without a calculator

• To simplify square roots more effectively

• To improve memory skills

• Both B and C

Between which two integers does the square root of 41 fall?

• Between 6 and 7

• Between 5 and 6

• Between 4 and 5

• Between 7 and 8

Tags

CCSS.8.NS.A.2