When you ask "What number is halfway between 75 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=75 and Y=257.
To find the number halfway between 75 and 257, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 75 and 257 into our formula, we get:
(75 + 257)/2 = 166
Thus, the number halfway between 75 and 257 is 166.
To check that our answer is correct, we subtract 75 from 166 and subtract 166 from 257 and compare the two numbers:
166 - 75 = 91
257 - 166 = 91
As you can see, the halfway number is 91 higher than 75 and 91 lower than 257. Therefore, our halfway between answer of 166 above is correct.
Halfway Between
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Halfway Between 75 and 258
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