When you ask "What number is halfway between 64 and 493?" 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=493.
To find the number halfway between 64 and 493, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 493 into our formula, we get:
(64 + 493)/2 = 278.5
Thus, the number halfway between 64 and 493 is 278.5.
To check that our answer is correct, we subtract 64 from 278.5 and subtract 278.5 from 493 and compare the two numbers:
278.5 - 64 = 214.5
493 - 278.5 = 214.5
As you can see, the halfway number is 214.5 higher than 64 and 214.5 lower than 493. Therefore, our halfway between answer of 278.5 above is correct.
Halfway Between
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Halfway Between 64 and 494
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