Before proceeding to the solution of examples and problems be sure to read the theoretical part of the lesson
Highest common factor
1. List all the factors of15
а) 1, 3, 7, 15;
b) 1, 3, 5, 15;
c) 1, 2, 5, 15;
d) 1,
3, 5, 10.
2. List all the factors of
20
20
а) 1, 2, 4, 7, 10, 20;
b) 1, 3, 4, 5, 10, 20;
c) 1, 2, 4, 5, 15, 20;
d) 1, 2, 4, 5, 10, 20.
3. Write down the HCF of
15 and 20
15 and 20
а) 5; b) 3;
c) 10;
d) 15.
4. Find the HCF of
16 and 24
а) 2;
b) 16;
c) 8; d) 4.
5. Find the HCF of
21 and 35
а) 3; b) 14;
c) 5;
d) 7.
6. Find the HCF
of
8, 12 and 20
а) 8; b)
2;
c) 4;
d) 6.
7. Write down the HCF of
21 and 28
21 and 28
а) 3; b) 7;
c) 14;
d) 9.
8. Using any method, find the Highest
Common Factor of
24 and 60.
а) 12; b) 24;
c) 4; d) 8.
9. Using any method, find the Highest
Common Factor of
45 and 70.
а) 7; b) 3;
c) 15;
d) 5.
10. Using any
method, find the Highest Common Factor of
135 and 81.
а) 35;
b) 27;
c) 3; d) 9.
11. Using any
method, find the Highest Common Factor of
324, 144 and 432.
а) 24;
b) 48;
c) 12;
d) 36.
12. Using any
method, find the Highest Common Factor of
320, 640 and 840.
а) 40; b) 48;
c) 34; d) 36.
Комментариев нет:
Отправить комментарий