Approximating Cube Roots

Learn how to approximate cube roots with this eighth-grade math worksheet! If you have a number that’s not a perfect cube, you can approximate its cube root by finding the two whole numbers that the cube root falls between. This one-page practice worksheet helps students build number sense and familiarity with perfect cubes as they complete 12 practice problems featuring non-perfect cubes between 1 and 1,000. Beginning with an explanation and example problem and ending with a challenge question, this worksheet is a great way to give learners practice working with irrational numbers while preparing them for higher-level concepts to come. For even more practice with cube roots, check out Cube Roots of Perfect Cubes.