Hi I need the answers quickly po since its almost due and the points will be 25!
Write what is the GCF and the LCM of the numbers
Numbers GCF LCM
1. 21 , 42
2. 20 , 24
3. 18 , 42
4. 81 , 117
5. 4 , 12 , 28
Write what is the GCF and the LCM of the numbers
Numbers GCF LCM
1. 21 , 42
2. 20 , 24
3. 18 , 42
4. 81 , 117
5. 4 , 12 , 28
Answers & Comments
Analyze this process to know how to find the GCF and LCM
1. 21 = 3*7
42 = 2*3*7
GCF = 3*7 = 21
LCM = 2*3*7 = 42
2. 20 = 2*2*5
24 = 2*2*2*3
GCF = 2*2 = 4
LCM = 2*2*2*3*5 = 120
3. 18 = 2*3*3
42 = 2*3*7
GCF = 2*3 = 6
LCM = 2*3*3*7 = 126
4. 81 = 3*3*3*3
117 = 3*3*13
GCF = 3*3 = 9
LCM = 3*3*3*3*13 = 1053
5. 4 = 2*2
12 = 2*2*3
28 = 2*2*7
GCF = 2*2 = 4
LCM = 2*2*3*7 = 84
Answer:
1. GCF = 21 ; LCM = 42
2. GCF = 4 ; LCM = 120
3. GCF = 6 ; LCM = 126
4. GCF = 9 ; LCM = 1053
5. GCF = 4 ; LCM = 84