Practicing Class 7 Maths MCQ and Class 7 Maths Part 2 Chapter 3 Finding Common Ground MCQ Questions Online Test with Answers daily helps in time management.
MCQ on Finding Common Ground Class 7
Finding Common Ground MCQ Class 7
Class 7 Finding Common Ground MCQ
Question 1.
Which of the following is the prime factorisation of 84?
(a) 2 × 2 × 3 × 7
(b) 4 × 21
(c) 2 × 3 × 14
(d) 7 × 12
Answer:
(a) 2 × 2 × 3 × 7
Question 2.
Which of the following statements is true?
(a) A composite number has exactly two factors.
(b) A prime number has more than two factors.
(c) Every multiple of a number is also a product of that number.
(d) 1 is a prime number.
Answer:
(c) Every multiple of a number is also a product of that number.
Question 3.
To find the HCF using prime factorisation, which rule is followed?
(a) Use the largest power of each prime
(b) Use the sum of the primes
(c) Use the minimum occurrences of each common prime
(d) Use only one prime factor
Answer:
(c) Use the minimum occurrences of each common prime
Question 4.
Consecutive numbers are always :
(a) Prime numbers
(b) Composite numbers
(c) Co-prime numbers
(d) Multiples of each other
Answer:
(c) Co-prime numbers
Question 5.
The word ‘conjecture’ means
(a) A proven theorem
(b) A guess based on patterns or observations
(c) A mathematical formula
(d) A group of numbers
Answer:
(b) A guess based on patterns or observations
Question 6.
Rahul has two ropes measuring 36 m and 48 m. He wants to cut them into equal pieces of maximum possible length, without wasting any rope. What should be the length of each piece?
(a) 6 m
(b) 8 m
(c) 12 m
(d) 18 m
Answer:
(c) 12 m
Question 7.
A factory packs chocolate in boxes of 6 and 9 pieces. What is the minimum number of chocolates needed so that there will be no extra chocolates in any type of box?
(a) 18
(b) 27
(c) 36
(d) 54
Answer:
(a) 18
Question 8.
Which of the following is not a composite number?
(a) 45
(b) 29
(c) 63
(d) 77
Answer:
(b) 29
Question 9.
Which number is a factor of 12?
(a) 5
(b) 3
(c) 7
(d) 9
Answer:
(b) 3
Question 10.
If one number is a multiple of another number, then the larger number is their _____.
(a) HCF
(b) LCM
(c) Prime number
(d) Can’t be decided
Answer:
(b) LCM
Finding Common Ground Class 7 Fill in the Blanks
1. A number that has only two factors, 1 and itself, is called a _____number.
Answer:
Prime
2. The smallest number that is divisible by two or more numbers is called their _____.
Answer:
common multiple
3. The largest number that divides two or more numbers exactly is called their _____.
Answer:
common factor
4. Expressing a number as a product of prime numbers is called _____.
Answer:
prime factorisation
5. Prime factorisation helps us easily find the _____ and _____ of numbers.
Answer:
HCF, LCM
6. _____ and _____ are neither prime nor composite numbers.
Answer:
0 and 1
7. _____ × LCM of two numbers = Product of two numbers.
Answer:
HCF