Post on 05-Jan-2016
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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!