Class 8 Maths MCQs on Cube Numbers and Identifying Perfect Cubes with Solutions
Class 8 Maths MCQs on Cube Numbers and Identifying Perfect Cubes with Solutions
Class: 8
Subject: Mathematics
Chapter 1: A Square and A Cube
Topic: Cube Numbers & Perfect Cubes
Board: CBSE (Based on Latest NCERT Curriculum)
These Multiple Choice Questions (MCQs) are strictly designed as per the CBSE curriculum based on NCERT books, making them ideal for CBSE Class 8 Mathematics examination standard.
Subject: Mathematics
Chapter 1: A Square and A Cube
Topic: Cube Numbers & Perfect Cubes
Board: CBSE (Based on Latest NCERT Curriculum)
These Multiple Choice Questions (MCQs) are strictly designed as per the CBSE curriculum based on NCERT books, making them ideal for CBSE Class 8 Mathematics examination standard.
1. The cube of 4 is:
Answer: C) 64
4³ = 4 × 4 × 4 = 64.
4³ = 4 × 4 × 4 = 64.
2. Which of the following is a perfect cube?
Answer: A) 125
125 = 5 × 5 × 5 = 5³.
125 = 5 × 5 × 5 = 5³.
3. The cube of 10 is:
Answer: B) 1000
10³ = 10 × 10 × 10 = 1000.
10³ = 10 × 10 × 10 = 1000.
4. Which number is not a perfect cube?
Answer: D) 500
216 = 6³, 343 = 7³, 512 = 8³, but 500 is not a cube.
216 = 6³, 343 = 7³, 512 = 8³, but 500 is not a cube.
5. The cube root of 27 is:
Answer: B) 3
3 × 3 × 3 = 27.
3 × 3 × 3 = 27.
6. The cube root of 512 is:
Answer: C) 8
8³ = 512.
8³ = 512.
7. Which digit can be the unit digit of a perfect cube?
Answer: D) All of these
Perfect cubes can end in any digit from 0 to 9.
Perfect cubes can end in any digit from 0 to 9.
8. The cube of an even number is always:
Answer: B) Even
Even × Even × Even = Even.
Even × Even × Even = Even.
9. The cube of an odd number is always:
Answer: B) Odd
Odd × Odd × Odd = Odd.
Odd × Odd × Odd = Odd.
10. Which of the following is 9³?
Answer: A) 729
9 × 9 × 9 = 729.
9 × 9 × 9 = 729.
11. The cube root of 1 is:
Answer: D) Both B and C
1³ = 1 and (-1)³ = -1. But cube root of 1 is 1.
1³ = 1 and (-1)³ = -1. But cube root of 1 is 1.
12. The smallest perfect cube is:
Answer: A) 0
0³ = 0.
0³ = 0.
13. 1000 is the cube of:
Answer: C) 10
10³ = 1000.
10³ = 1000.
14. Which of the following is a perfect cube?
Answer: A) 64
4³ = 64.
4³ = 64.
15. The cube of 6 is:
Answer: B) 216
6³ = 6 × 6 × 6 = 216.
6³ = 6 × 6 × 6 = 216.
16. The cube root of 343 is:
Answer: C) 7
7³ = 343.
7³ = 343.
17. Which number must be multiplied by 4 to make a perfect cube?
Answer: B) 4
4 × 4 = 16, not cube. But 4 × 4 × 4 = 64 is cube. Hence multiply by 4 twice.
4 × 4 = 16, not cube. But 4 × 4 × 4 = 64 is cube. Hence multiply by 4 twice.
18. The unit digit of cube of 3 is:
Answer: C) 7
3³ = 27.
3³ = 27.
19. Which of the following is 11³?
Answer: B) 1331
11³ = 1331.
11³ = 1331.
20. Which statement is true?
Answer: B) Perfect cubes can end with any digit
Cube numbers may end in any digit from 0–9.
Cube numbers may end in any digit from 0–9.