Class 8 Cubes And Cube Roots CBSE Questions & Answers
Class 8 · Cubes And Cube Roots
This is Mathematics Class 8 Cubes and Cube Roots CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.
Questions & Answers
1
Find the cube root of 2197.
- A43
- B33
- C23
- D13Correct
2
Find the cube root of 13824.
- A27
- B25
- C26
- D24Correct
3
Find the cube root of 17576.
- A24
- B25
- C23
- D26Correct
4
Find the cube root of 15625.
- A22
- B25Correct
- C24
- D23
5
Find the cube root of 216000.
- A50
- B60Correct
- C40
- DNone of these
6
Find the prime factorisation of 3375.
- A\({{\text{3}}^{\text{3}}} \times {\text{ }}{{\text{5}}^{\text{3}}}\)Correct
- B\({{\text{3}}^{\text{3}}} \times {\text{ }}{{\text{2}}^{\text{3}}}\)
- C\({{\text{3}}^{\text{3}}} \times {\text{ }}{{\text{4}}^{\text{3}}}\)
- D\({{\text{2}}^{\text{3}}} \times {\text{ }}{{\text{5}}^{\text{3}}}\)
7
Find the prime factorisation of 6859.
- A\({\text{2}}{{\text{3}}^{\text{3}}}\)
- B\({\text{3}}{{\text{4}}^{\text{7}}}\)
- C\({{\text{6}}^{\text{8}}}\)
- D\({\text{1}}{{\text{9}}^{\text{3}}}\)Correct
8
Find the prime factorisation of 1728.
- A\({{\text{2}}^{\text{3}}} \times {\text{ }}{{\text{2}}^{\text{3}}} \times {\text{ }}{{\text{5}}^{\text{3}}}\)
- B\({{\text{2}}^{\text{3}}} \times {\text{ }}{{\text{2}}^{\text{3}}} \times {\text{ }}{{\text{3}}^{\text{3}}}\)Correct
- C\({{\text{2}}^{\text{3}}} \times {\text{ }}{{\text{3}}^{\text{3}}} \times {\text{ }}{{\text{3}}^{\text{3}}}\)
- DNone of these
9
What is the cube of double of ‘x’?
- A\({\text{6}}{{\text{x}}^{\text{3}}}\)
- B\({\text{8}}{{\text{x}}^{\text{3}}}\)Correct
- C\({\text{4}}{{\text{x}}^{\text{3}}}\)
- DNone of these
10
What is the cube of double of ‘3a’?
- A\({\text{6}}{{\text{a}}^{\text{3}}}\)
- B\({\text{216}}{{\text{a}}^{\text{3}}}\)Correct
- C\({\text{36}}{{\text{a}}^{\text{3}}}\)
- DNone of these
11
What is the cube of triple of ‘m’?
- A\({\text{9}}{{\text{m}}^{\text{3}}}\)
- B\({\text{27}}{{\text{m}}^{\text{3}}}\)Correct
- CNone of these
- D\({\text{3}}{{\text{m}}^{\text{3}}}\)
12
Find the cubes of 2a, 3a and 4a.
- A\({\text{8}}{{\text{a}}^{\text{2}}},{\text{ 27}}{{\text{a}}^{\text{2}}},{\text{ 64}}{{\text{a}}^{\text{2}}}\)
- B\({\text{4}}{{\text{a}}^{\text{2}}},{\text{ 9}}{{\text{a}}^{\text{2}}},{\text{ 16}}{{\text{a}}^{\text{2}}}\)
- C\({\text{4}}{{\text{a}}^{\text{3}}},{\text{ 9}}{{\text{a}}^{\text{3}}},{\text{ 16}}{{\text{a}}^{\text{3}}}\)
- D\({\text{8}}{{\text{a}}^{\text{3}}},{\text{ 16}}{{\text{a}}^{\text{3}}},{\text{ 64}}{{\text{a}}^{\text{3}}}\)Correct
13
Find the cubes of x, 2x and 3x.
- A\({{\text{x}}^{\text{3}}},{\text{ 8}}{{\text{x}}^{\text{3}}},{\text{ 27}}{{\text{x}}^{\text{3}}}\)Correct
- B\({\text{8}}{{\text{x}}^{\text{2}}},{\text{ 27}}{{\text{x}}^{\text{2}}},{\text{ 64}}{{\text{x}}^{\text{2}}}\)
- C\({\text{4}}{{\text{x}}^{\text{2}}},{\text{ 9}}{{\text{x}}^{\text{2}}},{\text{ 16}}{{\text{x}}^{\text{2}}}\)
- D\({\text{4}}{{\text{x}}^{\text{3}}},{\text{ 9}}{{\text{x}}^{\text{3}}},{\text{ 16}}{{\text{x}}^{\text{3}}}\)
14
Find the cubes of 3x, 5x and 7x.
- A\({\text{27}}{{\text{x}}^{\text{3}}},{\text{ 125}}{{\text{x}}^{\text{3}}},{\text{ 343}}{{\text{x}}^{\text{3}}}\)Correct
- B\({\text{4}}{{\text{x}}^{\text{2}}},{\text{ 9}}{{\text{x}}^{\text{2}}},{\text{ 16}}{{\text{x}}^{\text{2}}}\)
- C\({\text{4}}{{\text{x}}^{\text{3}}},{\text{ 9}}{{\text{x}}^{\text{3}}},{\text{ 16}}{{\text{x}}^{\text{3}}}\)
- D\({\text{8}}{{\text{x}}^{\text{2}}},{\text{ 27}}{{\text{x}}^{\text{2}}},{\text{ 64}}{{\text{x}}^{\text{2}}}\)
15
Find the cubes of x, 4x and 5x.
- A\({\text{8}}{{\text{x}}^{\text{2}}},{\text{ 27}}{{\text{x}}^{\text{2}}},{\text{ 64}}{{\text{x}}^{\text{2}}}\)
- B\({\text{4}}{{\text{x}}^{\text{2}}},{\text{ 9}}{{\text{x}}^{\text{2}}},{\text{ 16}}{{\text{x}}^{\text{2}}}\)
- C\({\text{4}}{{\text{x}}^{\text{3}}},{\text{ 9}}{{\text{x}}^{\text{3}}},{\text{ 16}}{{\text{x}}^{\text{3}}}\)
- D\({{\text{x}}^{\text{3}}},{\text{ 64}}{{\text{x}}^{\text{3}}},{\text{ 125}}{{\text{x}}^{\text{3}}}\)Correct