Page 1 - HCF and finding HCF

Subject – Mathematics
Chapter 3 – FACTORS AND MULTIPLES

Sub-topic-4:- HCF(Highest Common Factor)

Practice Time:
SUBJECTIVE QUESTIONS:
1. Find the H.C.F. of the following by prime factorization method.
(i) 56, 72
(ii) 21, 35

(iii) 56, 70
(iv) 45, 81

(v) 42, 49
(vi) 44, 66, 110

2. Find the H.C.F. of the following by factorization method.
(i) 16, 24

(ii) 28, 35
(iii) 48, 60

(iv) 15, 52, 65
(v) 15, 18, 30

(vi) 42, 54, 64
3. Find the H.C.F. of the following by division method.

(i) 8, 16 and 36
(ii) 9, 18 and 27

(iii) 20, 80 and 128
(iv) 60, 80, 90

(v) 25, 75, 95
(vi) 12, 24, 88
OBJECTIVE QUESTIONS:
1. HCF of 36 and 84 is _______
a. 4 b. 6 c. 12 d. 18
2. HCF of 24, 36 and 40 is ________.
a. 2 b. 4 c. 6 d. 8
3. HCF of 120, 125 and 100 is ___________
a. 5 b. 10 c. 15 d. 20
4. The HCF of 9, 12 and 15 is _________
a. 9 b. 5 c. 4 d. 3
5. The HCF of 42, 70 and 112 is ________
a. 2 b. 7 c. 14 d. 1
6. The HCF of 81 and 108 is ________