When you ask "What number is halfway between 64 and 279?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=64 and Y=279.
To find the number halfway between 64 and 279, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 279 into our formula, we get:
(64 + 279)/2 = 171.5
Thus, the number halfway between 64 and 279 is 171.5.
To check that our answer is correct, we subtract 64 from 171.5 and subtract 171.5 from 279 and compare the two numbers:
171.5 - 64 = 107.5
279 - 171.5 = 107.5
As you can see, the halfway number is 107.5 higher than 64 and 107.5 lower than 279. Therefore, our halfway between answer of 171.5 above is correct.
Halfway Between
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Halfway Between 64 and 280
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