When a number "goes evenly" into another number, we just say that number divides another number. Example: 2 divides 102. This is denoted with a vertical bar, "|", e.g. 2|102
The number is even, so 2 divides 102.
Quick lesson on digital roots. Digital roots are summing the digits of a number, until you are left with a single digit.
Example: Find the digital root of 993
9 + 9 + 3 = 21 (not a single digit, repeat the process)
2 + 1 = 3
Therefore, the digital root of 993 is 3.
Now this is where digital roots come in handy:
If the digital root of a number is equal to 3, 6, or 9 then 3 divides that number.
If the digital root of a number is equal to 3, 6, or 9 AND is even then 6 divides that number.
If the digital root of a number is equal to 9, then 9 divides it.
The digital root of 102 is 1+0+2=3 and 102 is even.
So 3|102 and 6|102
102/2 = 51, therefore 51|102
102/3 = 34, therefore 34|102
102/6 = 17, therefore 17|102
Numbers that evenly go into 102 are:
2, 3, 6, 17, 34, and 51 (1 and 102 can also be included)
1 2 3 6 9 17 18 34 51 102 153 306.
Not evenly because it will have a remainder of 2
2
Nothing can go evenly into 21 or 17. They are both odd numbers and therefore cannot be evenly divided.
17 is the largest number that evenly divides both 102 and 85.
They are: 1 and 51
No. 102 is not evenly divisible by four.
1 2 3 6 9 17 18 34 51 102 153 306.
Not evenly because it will have a remainder of 2
no numbers!
1, 3, 17, 51.
2
Nothing can go evenly into 21 or 17. They are both odd numbers and therefore cannot be evenly divided.
The numbers that go into 30 are1, 2, 3, 5, 30, 15, 10, 6
Called 'factors', the positive, whole numbers that go into 612 evenly are: 1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 204, 306 and 612.
17 is the largest number that evenly divides both 102 and 85.
60.5