highest common factor / HCF / class- 1-2-3

 HCF by factor method

1- Find HCF of 4 and 8 by finding factors.

2- Find HCF of 9 and 12 by finding factors.

3- Find HCF of 4 and 6 by finding factors.

4- Find HCF of 3 and 6 by finding factors.

5- Find HCF of 4 and 10 by finding factors.

6- Find HCF of 2, 4 and 8 by finding factors.

7- Find HCF of 4, 6 and 8 by finding factors.

8- Find HCF of 3, 6 and 9by finding factors.

9- Find HCF of 6, 9  and 15 by finding factors.

10- Find HCF of 8, 12 and 16 by finding factors.


HCF by prime factorization method

1- Find HCF of 45 and 30 using prime factorization method.

2- Find HCF of 12 and 36 using prime factorization method.

3- Find HCF of 54and 81 using prime factorization method.

4- Find HCF of 25 and 40 using prime factorization method.

5-Find HCF of 40 and 48 using prime factorization method.

6- Find HCF of 12, 36 and 48 using prime factorization method.

7- Find HCF of 25, 40 and 60 using prime factorization method.

8- Find HCF of 40, 48 and 72 using prime factorization method.

9- Find HCF of 64, 96 and 216 using prime factorization method.

10- Find HCF of 18, 24 and 32 using prime factorization method.

HCF using division method
1- Find HCF of 24 and 36 using division method.
2- Find HCF of 36 and 56 using division method.
3- Find HCF of 28 and 42 using division method.
4- Find HCF of 35 and 49 using division method.
5- Find HCF of 64 and 80 using division method.
6- Find HCF of 12, 36 and 48 using division method.
7- Find HCF of 40, 48 and 72 using division method.
8- Find HCF of 56, 42 and 140 using division method.
9- Find HCF of 44, 121 and 132 using division method.
10- Find HCF of 128, 136 and 512 using division method.

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