When you ask "What number is halfway between 34 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=34 and Y=257.
To find the number halfway between 34 and 257, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 34 and 257 into our formula, we get:
(34 + 257)/2 = 145.5
Thus, the number halfway between 34 and 257 is 145.5.
To check that our answer is correct, we subtract 34 from 145.5 and subtract 145.5 from 257 and compare the two numbers:
145.5 - 34 = 111.5
257 - 145.5 = 111.5
As you can see, the halfway number is 111.5 higher than 34 and 111.5 lower than 257. Therefore, our halfway between answer of 145.5 above is correct.
Halfway Between
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Halfway Between 34 and 258
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