ok here is a list of 2 numbers Each and I had to find the LCM of... also the answers...
1.5\10=10
2.8\7=64
3.9\12=36
4.6\8=24
5.3\21=21
6.5\9=45
All are right except for 2.
what 2??
8\7=64 >> wrong
ok, here are their multiples...
8= 8,16,24,32,40,48,56,64,72,80
7=7,14,21,28,35,42,49,56....OHHHH!! its 56!!
To find the Least Common Multiple (LCM) of two numbers, you need to find the smallest number that is divisible by both of those numbers. Here's how you can find the LCM of each pair of numbers you provided:
1. LCM of 5 and 10:
- Start by listing the multiples of both numbers:
- Multiples of 5: 5, 10, 15, 20, ...
- Multiples of 10: 10, 20, 30, ...
- The smallest number that appears in both lists is 10. So, the LCM of 5 and 10 is 10.
2. LCM of 8 and 7:
- List the multiples of both numbers:
- Multiples of 8: 8, 16, 24, ...
- Multiples of 7: 7, 14, 21, ...
- Here, the smallest number that appears in both lists is 56. So, the LCM of 8 and 7 is 56.
3. LCM of 9 and 12:
- List the multiples of both numbers:
- Multiples of 9: 9, 18, 27, ...
- Multiples of 12: 12, 24, 36, ...
- The smallest number that appears in both lists is 36. So, the LCM of 9 and 12 is 36.
4. LCM of 6 and 8:
- List the multiples of both numbers:
- Multiples of 6: 6, 12, 18, ...
- Multiples of 8: 8, 16, 24, ...
- The smallest number that appears in both lists is 24. So, the LCM of 6 and 8 is 24.
5. LCM of 3 and 21:
- List the multiples of both numbers:
- Multiples of 3: 3, 6, 9, ...
- Multiples of 21: 21, 42, 63, ...
- The smallest number that appears in both lists is 21. So, the LCM of 3 and 21 is 21.
6. LCM of 5 and 9:
- List the multiples of both numbers:
- Multiples of 5: 5, 10, 15, ...
- Multiples of 9: 9, 18, 27, ...
- The smallest number that appears in both lists is 45. So, the LCM of 5 and 9 is 45.
Note: It seems like the provided answers do not match with the correct LCM values for the pairs of numbers given. The correct LCM values should be as follows:
1. LCM of 5 and 10 = 10
2. LCM of 8 and 7 = 56
3. LCM of 9 and 12 = 36
4. LCM of 6 and 8 = 24
5. LCM of 3 and 21 = 21
6. LCM of 5 and 9 = 45