How does the unlimited cube roots 1 to 20 worksheet generator work?

Every click of 'Generate New Worksheet' creates a completely fresh set of cube roots 1 to 20 problems with unique numbers. No two worksheets are ever the same — perfect for daily practice, homework variety, and preventing student copying. You can also customize the problem count (6, 8, 10, 12, 15, or 20 problems per sheet).

Are these cube roots 1 to 20 worksheets free to print with answer keys?

Yes! Every single worksheet on PanMaths is 100% free with no sign-up needed. Each sheet includes a dedicated Answer Key on Page 2 with step-by-step intermediate evaluation lines for 1-minute grading.

🎓 Grades 7-9📄 Free PDF + Keys♾️ Dynamic Generator

Cube Roots 1 to 20FREEWorksheet Generator(Grades 7-9)

Cube Roots 1 to 20 worksheets with step-by-step answer keys. Generate unlimited unique practice sheets with fresh problems for Grades 7–9.

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Roots 1–10Core CCSS Roots 1–20 Roots 1–100 Custom Generator

Level:

Set:

Count:

Key in PrintShow Steps

Set A • 10 Qs

PanMaths.comCube Roots 1 to 20 Worksheet Generator with Answers • Set A (Medium)

Name: __________________________

Date: _____________ Period: ____

Score: _____ / 10

1.31

= ______

Workspace:

2.36859

= ______

Workspace:

3.364

= ______

Workspace:

4.31331

= ______

Workspace:

5.33375

= ______

Workspace:

6.3125

= ______

Workspace:

7.327

= ______

Workspace:

8.38000

= ______

Workspace:

9.35832

= ______

Workspace:

10.31728

= ______

Workspace:

PanMaths.com • Free Math Worksheet Generator • Set A (Medium)Page 1 of 2

PanMaths.comAnswer Key & Worked Solutions • Set A (Medium)

Answer Key

Total Problems: 10

1.31

= 1

1. Benchmark Fact: 1³ = 1 × 1 × 1 = 1

2. Evaluate: ∛(1³) = 1

3. Value: ∛1 = 1 ✅

2.36859

= 19

1. Group into Periods of 3: 6 | 859

2. Tens Digit (6): 1³ = 1 ≤ 6 < 2³ = 8 → Tens is 1

3. Units Digit (Ends in 9): 9³ ends in 9 → Units is 9

4. Combine: (10 + 9) = 19

3.364

= 4

1. Benchmark Fact: 4³ = 4 × 4 × 4 = 64

2. Evaluate: ∛(4³) = 4

3. Value: ∛64 = 4 ✅

4.31331

= 11

1. Group into Periods of 3: 1 | 331

2. Tens Digit (1): 1³ = 1 ≤ 1 < 2³ = 8 → Tens is 1

3. Units Digit (Ends in 1): 1³ ends in 1 → Units is 1

4. Combine: (10 + 1) = 11

5.33375

= 15

1. Prime Factorize: 3375 = 3³ × 5³

2. Group into Triples: ∛(3³ × 5³) = 3 × 5

3. Calculate: (3 × 5) = 15

6.3125

= 5

1. Benchmark Fact: 5³ = 5 × 5 × 5 = 125

2. Evaluate: ∛(5³) = 5

3. Value: ∛125 = 5 ✅

7.327

= 3

1. Benchmark Fact: 3³ = 3 × 3 × 3 = 27

2. Evaluate: ∛(3³) = 3

3. Value: ∛27 = 3 ✅

8.38000

= 20

1. Prime Factorize: 8000 = 2⁶ × 5³

2. Group into Triples: ∛(2⁶ × 5³) = 2² × 5

3. Calculate: (2² × 5) = 20

9.35832

= 18

1. Prime Factorize: 5832 = 2³ × 3⁶

2. Group into Triples: ∛(2³ × 3⁶) = 2 × 3²

3. Calculate: (2 × 3²) = 18

10.31728

= 12

1. Prime Factorize: 1728 = 2⁶ × 3³

2. Group into Triples: ∛(2⁶ × 3³) = 2² × 3

3. Calculate: (2² × 3) = 12

PanMaths.com • Answer Key & Worked SolutionsPage 2 of 2

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Worksheet Info

Categoryarithmetic

Grade LevelGrades 7-9

DifficultyIntermediate (Roots 1 to 20, Radicands up to 8,000)

Time15-20 min

Skills Practiced

✓ Cube roots 1 to 20 evaluation
✓ Perfect cubes recognition up to 8,000
✓ 3D volume inverse operations
✓ Pre-algebra radical simplification

Related Worksheets

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Mental Shortcut for 4-Digit Cube Roots

Any 4-digit perfect cube like 2,197 can be solved in 2 seconds mentally: Look at the last digit (7 ➔ ends in 3). Cross out the last three digits, leaving 2 (between 1³ and 2³ ➔ starts with 1). Result: 13! Practicing with these worksheets turns students into mental math wizards.

Classroom-Ready Clean Printables

Formatted cleanly for both US Letter and A4 printers with zero screen fluff, headers for student name/date/score, and an answer key on the second page.