When you ask "What number is halfway between 79 and 200?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=79 and Y=200.
To find the number halfway between 79 and 200, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 200 into our formula, we get:
(79 + 200)/2 = 139.5
Thus, the number halfway between 79 and 200 is 139.5.
To check that our answer is correct, we subtract 79 from 139.5 and subtract 139.5 from 200 and compare the two numbers:
139.5 - 79 = 60.5
200 - 139.5 = 60.5
As you can see, the halfway number is 60.5 higher than 79 and 60.5 lower than 200. Therefore, our halfway between answer of 139.5 above is correct.
Halfway Between
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Halfway Between 79 and 201
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