If you add an even number to an even number, you will have an even number as a result.
No sum of any even numbers can add up to an odd number.
Well sometimes you might get a even number when you are using an even number to add. For example: 2+2=4 or 6+6=12. Sometimes you might not get an even number if you add with an odd number. For example: 18+17=35 or 2+3=5. Thank You
No even numbers add up to 9. The sum of even numbers is always an even number.
You get an even number
whenever you add an even number the answer will be the same (odd/even) as the other number
Very easily: if the prime factorization includes 2, it's even. If not, it's odd.
Add up the digits. If the total is a multiple of 9, the whole number is a multiple of 9.
If you add an even number to an even number, you will have an even number as a result.
EVEN
Always an even number. Think of an odd number as an even number plus a half. Add them up and the two halves make an even.
No sum of any even numbers can add up to an odd number.
The sum of two even numbers will always be another even number.
Two is the only even prime number. When you add an odd number to another odd number, you get an even number. When you add an even number to an odd number, you get an odd number. 91 is an odd number, therefore the answer is 2 and 89.
An even number
Well sometimes you might get a even number when you are using an even number to add. For example: 2+2=4 or 6+6=12. Sometimes you might not get an even number if you add with an odd number. For example: 18+17=35 or 2+3=5. Thank You
Whatever is required by the context of the question. Whether or not the number is negative gives no indication as to whether to add or subtract.