Estimate a cube root between whole numbers and to the nearest tenth

Answer Key - Grade 8 Math Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.

1. 1.

   Esme has a cube-shaped eraser with a volume of 12 cubic centimeters. What is its edge to the nearest tenth of a centimeter?

   2.3
2. 2.

   Jun cuts a cube-shaped foam block with a volume of 59 cubic centimeters. What is its edge to the nearest tenth of a centimeter?

   3.9
3. 3.

   Kira wraps a cube-shaped gift box with a volume of 84 cubic inches, and a bow is waiting. What is its edge to the nearest tenth of an inch?

   4.4
4. 4.

   Milo plots ∛(−25) in a notebook. A negative number cubed stays negative. What is ∛(−25) to the nearest tenth?

   -2.9
5. 5.

   Noah checks ∛(−46) for a puzzle. What is ∛(−46) to the nearest tenth?

   -3.6
6. 6.

   Ren wonders whether ∛50 is more or less than 3.7. Which statement is true?

   • ∛50 is less than 3.7
   • ∛50 equals 3.7
   • ∛50 is greater than 3.7
7. 7.

   Tala tests ∛65 against 4.1 for a game. Which statement is true?

   • ∛65 equals 4.1
   • ∛65 is greater than 4.1
   • ∛65 is less than 4.1
8. 8.

   Esme places ∛400 on a poster number line. Between which two whole numbers is ∛400?

   • 20 and 21
   • 8 and 9
   • 6 and 7
   • 7 and 8
9. 9.

   Jun imagines a giant block cube with a volume of 600 cubic inches, so its edge is ∛600. Between which two whole numbers is ∛600?

   • 8 and 9
   • 9 and 10
   • 7 and 8
   • 24 and 25
10. 10.

    Kira adds ∛900 to a number line (the poster is getting long). Between which two whole numbers is ∛900?

    • 8 and 9
    • 30 and 31
    • 9 and 10
    • 10 and 11