When you ask "What number is halfway between 50 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=50 and Y=257.
To find the number halfway between 50 and 257, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 50 and 257 into our formula, we get:
(50 + 257)/2 = 153.5
Thus, the number halfway between 50 and 257 is 153.5.
To check that our answer is correct, we subtract 50 from 153.5 and subtract 153.5 from 257 and compare the two numbers:
153.5 - 50 = 103.5
257 - 153.5 = 103.5
As you can see, the halfway number is 103.5 higher than 50 and 103.5 lower than 257. Therefore, our halfway between answer of 153.5 above is correct.
Halfway Between
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Halfway Between 50 and 258
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