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This is for a second grade math why is the sum alway odd when you add a even and odd number?
Wiki User
∙ 14y ago
Parity is the "evenness" or "oddness" of a number.
If you add an even number to anything, the result will have the same parity as what you started with. Adding an even number to something that was odd gives you a sum that is odd.
To see "why" this happens may be beyond 2nd grade math:
"Even" numbers are multiples of two. This means that any even number can be written as a sum of a bunch of twos: 10 = 2 + 2 + 2 + 2 + 2, for example.
Adding an even number to an even number just adds more twos, so the sum is even.
"Odd" numbers can't be written just as a sum of twos. Adding an even number adds some twos, but you can't get rid of whatever was not a two in the original sum. This means that the sum of an even and odd number is odd.
Wiki User
∙ 14y ago
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Is the gcf of 2 odd numbers alway an even number?
That can never be an even number.
Why is the sum of two odd numbers even?
-- The first odd number is some even number plus an extra ' 1 '. -- The second odd number is some even number plus an extra ' 1 '. -- Add them. You get (an even number) + (an even number) + ( 2 ). That's an even number. ======================== Another mind-bending , brain-busting way to look at it : -- The first odd number is some even number plus an extra ' 1 '. -- The second odd number is some even number minus ' 1 '. -- Add them. You get (an even number) + (an even number) + ( [1 - 1] or zero ). That's an even number.
Does 3 to the second power times 5 to the second power have an even or odd number?
odd
Why is and odd number minus an even number odd?
Because the second number from an odd number is odd, and every other number is an odd number. In fact, if you add or subtract an even number with any number, the result keeps the same parity as the other number. So an odd number minus an even number is odd, while an even number minus and even number is even.
What is the probability of showing an even number on the first die and an odd number on the second die?
25%
Is the gcf of 2 odd numbers alway an even number?
That can never be an even number.
Will the product of two consecutive integers be odd or even?
It will alway be even, because it will always be the product of an odd and an even number, which is always even.
What grade has second to 8th grade?
i think that the answer is 4th grade even thou I'm only in 2nd grade
Why is the sum of two odd numbers even?
-- The first odd number is some even number plus an extra ' 1 '. -- The second odd number is some even number plus an extra ' 1 '. -- Add them. You get (an even number) + (an even number) + ( 2 ). That's an even number. ======================== Another mind-bending , brain-busting way to look at it : -- The first odd number is some even number plus an extra ' 1 '. -- The second odd number is some even number minus ' 1 '. -- Add them. You get (an even number) + (an even number) + ( [1 - 1] or zero ). That's an even number.
Is 2 a odd number?
2 is not an odd number it is an even number. I think you need to go back to 1st grade XD
Why task swithing time is constant even number of task that can be scheduled?
to get bad grade
Why do you get an even number when you add two even numbers?
An even number is always some quantity of 'twos' (2's), and any quantity of twos is an even number. The first even number is a quantity of twos, and the second even number is another quantity of twos. When you add the first quantity of twos to the second quantity of twos, you get a new quantity of twos. Since the new quantity of twos is a quantity of twos, it's an even number.
What are all the even numbers less than 1000?
Every second number greater than 2 is an even number.
Does 3 to the second power times 5 to the second power have an even or odd number?
odd
How do you work out the 100th even number?
The first even number is 1*2.The second even number is 2*2 and so on. So the hundredth even number is 100*2 = 200.
Why is and odd number minus an even number odd?
Because the second number from an odd number is odd, and every other number is an odd number. In fact, if you add or subtract an even number with any number, the result keeps the same parity as the other number. So an odd number minus an even number is odd, while an even number minus and even number is even.
What is the probability of showing an even number on the first die and an odd number on the second die?
25%
