When you ask "What number is halfway between 64 and 843?" 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=843.
To find the number halfway between 64 and 843, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 843 into our formula, we get:
(64 + 843)/2 = 453.5
Thus, the number halfway between 64 and 843 is 453.5.
To check that our answer is correct, we subtract 64 from 453.5 and subtract 453.5 from 843 and compare the two numbers:
453.5 - 64 = 389.5
843 - 453.5 = 389.5
As you can see, the halfway number is 389.5 higher than 64 and 389.5 lower than 843. Therefore, our halfway between answer of 453.5 above is correct.
Halfway Between
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Halfway Between 64 and 844
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