| |
| |
1. |
Look at the factors of 18 and 30. What is the greatest common factor?
factors of 18: 1, 2, 3, 6, 9, 18
factors of 30: 1, 2, 3, 5, 6, 10, 15, 30 |
| |
|
A. |
5 |
B. |
6 |
| |
|
C. |
2 |
D. |
3 |
| |
|
Hint |
|
| |
2. |
Which two numbers have a GCF of 9? |
| |
|
A. |
36, 39 |
B. |
36, 45 |
| |
|
C. |
45, 95 |
D. |
18, 36 |
| |
|
Hint |
|
| |
3. |
Look at the factors of 24 and 16. What is the greatest common factor?
factors of 16: 1, 2, 4, 8, 16
factors of 24: 1, 2, 3, 4, 6, 8, 12, 24 |
| |
|
A. |
2 |
B. |
8 |
| |
|
C. |
16 |
D. |
4 |
| |
|
Hint |
|
| |
4. |
Find the GCF of 32 and 42. |
| |
|
A. |
4 |
B. |
2 |
| |
|
C. |
14 |
D. |
3 |
| |
|
Hint |
|
| |
5. |
Which two numbers have a GCF of 7? |
| |
|
A. |
21, 63 |
B. |
35, 126 |
| |
|
C. |
25, 45 |
D. |
7, 17 |
| |
|
Hint |
|
|
|