Math · Exponents
Square Roots and Cube Roots
Find square and cube roots, estimate roots between whole numbers and solve x² = p and x³ = p.
- 🎓 Grade 8
- 🧮 Math
- 📐 8.EE.A.2
- ❓ 23 questions
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∛8 = ?
- A 3
- B 2
- C 1
- D 6
2 × 2 × 2 = 8
Which is closest to √30?
- A 5.5
- B 6.2
- C 5.1
- D 15
√20 is between which two whole numbers?
- A 3 and 4
- B 4 and 5
- C 5 and 6
- D 10 and 11
4² = 16 and 5² = 25.
Which values of x solve x² = 49?
- A x = 49 or x = −49
- B x = 24.5
- C x = 7 or x = −7
- D x = 7 only
√169 = ?
- A 13
- B 14
- C 12
- D 84.5
13 × 13 = 169
√90 is between which two whole numbers?
- A 45 and 46
- B 10 and 11
- C 9 and 10
- D 8 and 9
9² = 81 and 10² = 100.
√25 = ?
- A 4
- B 5
- C 12.5
- D 6
5 × 5 = 25
√50 is between which two whole numbers?
- A 8 and 9
- B 7 and 8
- C 25 and 26
- D 6 and 7
7² = 49 and 8² = 64.
√81 = ?
- A 8
- B 40.5
- C 9
- D 10
9 × 9 = 81
√144 = ?
- A 72
- B 13
- C 11
- D 12
12 × 12 = 144
Solve x³ = 64.
- A x = 8
- B x = 4
- C x = 21.3
- D x = 4 or x = −4
4³ = 64; (−4)³ = −64.
∛1000 = ?
- A 9
- B 11
- C 10
- D 30
10 × 10 × 10 = 1000
∛27 = ?
- A 2
- B 3
- C 9
- D 4
3 × 3 × 3 = 27
∛125 = ?
- A 6
- B 15
- C 5
- D 4
5 × 5 × 5 = 125
A square has area 121 cm². What is its side length?
- A 12 cm
- B 60.5 cm
- C 11 cm
- D 30.25 cm
√1 = ?
- A 1
- B 0.5
- C 0
- D 2
1 × 1 = 1
√36 + √64 = ?
- A 14
- B 10
- C 50
- D 100
6 + 8 = 14
√400 = ?
- A 200
- B 19
- C 20
- D 21
20 × 20 = 400
√3 is between which two whole numbers?
- A 3 and 4
- B 0 and 1
- C 2 and 3
- D 1 and 2
1² = 1 and 2² = 4.
√225 = ?
- A 112.5
- B 16
- C 14
- D 15
15 × 15 = 225
A cube has volume 216 in³. What is its edge length?
- A 72 in
- B 14.7 in
- C 36 in
- D 6 in
√64 = ?
- A 32
- B 9
- C 8
- D 7
8 × 8 = 64
∛64 = ?
- A 8
- B 4
- C 3
- D 12
4 × 4 × 4 = 64
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