When you ask "What number is halfway between 28 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=28 and Y=843.
To find the number halfway between 28 and 843, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 28 and 843 into our formula, we get:
(28 + 843)/2 = 435.5
Thus, the number halfway between 28 and 843 is 435.5.
To check that our answer is correct, we subtract 28 from 435.5 and subtract 435.5 from 843 and compare the two numbers:
435.5 - 28 = 407.5
843 - 435.5 = 407.5
As you can see, the halfway number is 407.5 higher than 28 and 407.5 lower than 843. Therefore, our halfway between answer of 435.5 above is correct.
Halfway Between
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Halfway Between 28 and 844
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