When you ask "What number is halfway between 64 and 485?" 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=485.
To find the number halfway between 64 and 485, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 485 into our formula, we get:
(64 + 485)/2 = 274.5
Thus, the number halfway between 64 and 485 is 274.5.
To check that our answer is correct, we subtract 64 from 274.5 and subtract 274.5 from 485 and compare the two numbers:
274.5 - 64 = 210.5
485 - 274.5 = 210.5
As you can see, the halfway number is 210.5 higher than 64 and 210.5 lower than 485. Therefore, our halfway between answer of 274.5 above is correct.
Halfway Between
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Halfway Between 64 and 486
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