III.ACTIVITIES
A. LET US REVIEW

Choose the letter of the correct answer. Write your answer on your answer sheet.

1. What is the greatest common factor of 10 and 30?
a. 40 b. 30 C. 20 d. 102
2. 9 is the greatest common factor of what numbers?
a. 72, 63 and 18 b. 9,12 and 36
c. 7, 21, 45 d. 90, 30, 10
3. What is the least common multiple of 4, 6, and 12?
a. 24 b. 48 c. 72. d. 120
4. What is the least common multiple of 6, 9, 12 and 15?
a. 72 b. 180 C. 194 d. 280
5. The set of numbers has 15 as their greatest common factor except
a. 15, 60, and 55 b. 60,45 and 15
c. 90, 45 and 30 d. 15, 30, and 85​