When you ask "What number is halfway between 64 and 257?" 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=257.
To find the number halfway between 64 and 257, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 257 into our formula, we get:
(64 + 257)/2 = 160.5
Thus, the number halfway between 64 and 257 is 160.5.
To check that our answer is correct, we subtract 64 from 160.5 and subtract 160.5 from 257 and compare the two numbers:
160.5 - 64 = 96.5
257 - 160.5 = 96.5
As you can see, the halfway number is 96.5 higher than 64 and 96.5 lower than 257. Therefore, our halfway between answer of 160.5 above is correct.
Halfway Between
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Halfway Between 64 and 258
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