When you ask "What number is halfway between 28 and 320?" 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=320.
To find the number halfway between 28 and 320, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 28 and 320 into our formula, we get:
(28 + 320)/2 = 174
Thus, the number halfway between 28 and 320 is 174.
To check that our answer is correct, we subtract 28 from 174 and subtract 174 from 320 and compare the two numbers:
174 - 28 = 146
320 - 174 = 146
As you can see, the halfway number is 146 higher than 28 and 146 lower than 320. Therefore, our halfway between answer of 174 above is correct.
Halfway Between
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Halfway Between 28 and 321
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