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6-8 Grade 8 Unit 8 Lesson 15

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Unit 8, Lesson 15

Cube Roots

Grade 8

Practice

Problem 1

Student Task Statement

Find the positive solution to each equation. If the solution is irrational, write the solution using square root or cube root notation.

Lesson 15 Resources

Student Materials Student Materials in Spanish

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Problem 2

Student Task Statement

For each cube root, find the two whole numbers that it lies between.

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Problem 3

Student Task Statement

Order the following values from least to greatest:

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Problem 4

Student Task Statement

Select all the equations that have a solution of :

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Problem 5

Student Task Statement

The equation has two solutions. This is because both , and also . So 5 is a solution, and is also a solution. But! The equation only has one solution, which is 5. This is because , and there are no other numbers you can cube to make 125. (Think about why is not a solution!)

Find all the solutions to each equation.

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Problem 6

ForLesson 9: Finding Unknown Side Lengths

Student Task Statement

Find the value of each variable, in units, to the nearest tenth.

A triangle has a horizontal side labeled "d." The other two sides of the triangle are each labeled 11. A vertical dashed line extends from the vertex above the horizontal side to the horizontal side and is labeled 8. A right angle symbol is indicated between the vertical dashed line and the horizontal side.

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