When you ask "What number is halfway between 64 and 831?" 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=831.
To find the number halfway between 64 and 831, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 831 into our formula, we get:
(64 + 831)/2 = 447.5
Thus, the number halfway between 64 and 831 is 447.5.
To check that our answer is correct, we subtract 64 from 447.5 and subtract 447.5 from 831 and compare the two numbers:
447.5 - 64 = 383.5
831 - 447.5 = 383.5
As you can see, the halfway number is 383.5 higher than 64 and 383.5 lower than 831. Therefore, our halfway between answer of 447.5 above is correct.
Halfway Between
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Halfway Between 64 and 832
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