Quarter 2Test 3 Review

XIX. DivisibilityXX. Prime/Composite & Prime Factorization

XXI. GCFXXII. LCM

Find the GCF and LCM for each set of numbers.

1) 15, 18, 24 2) 20, 32, 48

3) 12, 18, 36 4) 15, 60, 75

1) GCF: 3 LCM: 360 2) GCF: 4 LCM: 480

3) GCF: 6 LCM: 36 4) GCF: 15 LCM: 300

1) 34

2) 22 x 52

3) 25 x 3 x 5

Give the prime factorization of each number in exponential form in

ascending order. 1 ) 81 2) 100 3) 480

Answers: 1) 2, 3, 4, 6 2) 2, 4, 5, 10 3) 2, 3, 6

4) 2, 3, 6 5) 2, 3, 4, 6, 9 6) 2, 3, 4, 5, 6, 9, 10

Tell if the given number is divisible by 2, 3, 4, 5, 6, 9, 10.

1) 312 2) 140 3) 1384) 762 5) 864 6) 900

Remember, on the day of the test, to bring at least two pencils with erasers!