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| Worksheet 4 - The Highest Common Factor (HCF) and the Lowest Common Multiple (LCM) (Difficulty level: Easy) |
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| The Highest Common Factor (H.C.F.) of: |
| 24 and 27 is ____ |
12 and 6 is ____ |
15 and 10 is ____ |
30 and 25 is ____ |
10 and 20 is ____ |
| 20 and 25 is ____ |
10 and 16 is ____ |
10 and 30 is ____ |
14 and 10 is ____ |
21 and 18 is ____ |
| 27 and 18 is ____ |
4 and 16 is ____ |
20 and 40 is ____ |
8 and 18 is ____ |
12 and 18 is ____ |
| 8 and 12 is ____ |
9 and 6 is ____ |
27 and 24 is ____ |
10 and 35 is ____ |
27 and 12 is ____ |
| 14 and 16 is ____ |
21 and 12 is ____ |
6 and 18 is ____ |
35 and 45 is ____ |
12 and 4 is ____ |
| 14 and 6 is ____ |
25 and 40 is ____ |
10 and 8 is ____ |
30 and 45 is ____ |
18 and 6 is ____ |
| 21 and 9 is ____ |
6 and 16 is ____ |
18 and 14 is ____ |
30 and 27 is ____ |
9 and 6 is ____ |
| 18 and 10 is ____ |
10 and 18 is ____ |
6 and 12 is ____ |
10 and 8 is ____ |
4 and 6 is ____ |
| 9 and 6 is ____ |
9 and 18 is ____ |
8 and 16 is ____ |
35 and 20 is ____ |
27 and 24 is ____ |
| 21 and 24 is ____ |
35 and 25 is ____ |
20 and 15 is ____ |
15 and 45 is ____ |
45 and 40 is ____ |
| 25 and 40 is ____ |
15 and 35 is ____ |
9 and 12 is ____ |
15 and 35 is ____ |
10 and 35 is ____ |
| 20 and 15 is ____ |
25 and 35 is ____ |
9 and 6 is ____ |
35 and 30 is ____ |
35 and 15 is ____ |
| 15 and 12 is ____ |
6 and 4 is ____ |
30 and 25 is ____ |
27 and 6 is ____ |
6 and 4 is ____ |
| 12 and 10 is ____ |
16 and 12 is ____ |
30 and 25 is ____ |
14 and 18 is ____ |
6 and 18 is ____ |
| 9 and 21 is ____ |
6 and 4 is ____ |
12 and 10 is ____ |
20 and 18 is ____ |
20 and 10 is ____ |
| The Lowest Common Multiple (L.C.M.) of: |
| 15 and 6 is ____ |
18 and 6 is ____ |
15 and 30 is ____ |
10 and 4 is ____ |
10 and 12 is ____ |
| 15 and 16 is ____ |
4 and 8 is ____ |
45 and 15 is ____ |
15 and 9 is ____ |
15 and 24 is ____ |
| 4 and 9 is ____ |
6 and 10 is ____ |
6 and 18 is ____ |
9 and 12 is ____ |
15 and 36 is ____ |
| 9 and 10 is ____ |
15 and 8 is ____ |
6 and 8 is ____ |
9 and 25 is ____ |
15 and 12 is ____ |
| 6 and 24 is ____ |
25 and 15 is ____ |
9 and 10 is ____ |
30 and 10 is ____ |
15 and 30 is ____ |
| 10 and 15 is ____ |
10 and 6 is ____ |
9 and 8 is ____ |
15 and 9 is ____ |
15 and 36 is ____ |
| 60 and 15 is ____ |
25 and 16 is ____ |
9 and 8 is ____ |
15 and 9 is ____ |
4 and 12 is ____ |
| 4 and 12 is ____ |
8 and 4 is ____ |
4 and 36 is ____ |
25 and 6 is ____ |
10 and 24 is ____ |
| 9 and 15 is ____ |
10 and 24 is ____ |
15 and 6 is ____ |
15 and 25 is ____ |
25 and 12 is ____ |
| 25 and 24 is ____ |
15 and 4 is ____ |
6 and 20 is ____ |
6 and 15 is ____ |
6 and 20 is ____ |
| 15 and 12 is ____ |
10 and 8 is ____ |
15 and 8 is ____ |
9 and 15 is ____ |
25 and 36 is ____ |
| 4 and 16 is ____ |
6 and 12 is ____ |
9 and 30 is ____ |
10 and 8 is ____ |
25 and 24 is ____ |
| 25 and 6 is ____ |
15 and 6 is ____ |
60 and 15 is ____ |
9 and 10 is ____ |
15 and 30 is ____ |
| 25 and 30 is ____ |
15 and 24 is ____ |
25 and 6 is ____ |
6 and 8 is ____ |
4 and 30 is ____ |
| 10 and 8 is ____ |
15 and 8 is ____ |
4 and 9 is ____ |
4 and 6 is ____ |
10 and 20 is ____ |
Copyright 2009 - Adam Malinowski. (Member of CAL, Statutory Licence Schemes)