When you ask "What number is halfway between 64 and 823?" 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=823.
To find the number halfway between 64 and 823, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 823 into our formula, we get:
(64 + 823)/2 = 443.5
Thus, the number halfway between 64 and 823 is 443.5.
To check that our answer is correct, we subtract 64 from 443.5 and subtract 443.5 from 823 and compare the two numbers:
443.5 - 64 = 379.5
823 - 443.5 = 379.5
As you can see, the halfway number is 379.5 higher than 64 and 379.5 lower than 823. Therefore, our halfway between answer of 443.5 above is correct.
Halfway Between
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Halfway Between 64 and 824
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