When you ask "What number is halfway between 5 and 273?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=5 and Y=273.
To find the number halfway between 5 and 273, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 5 and 273 into our formula, we get:
(5 + 273)/2 = 139
Thus, the number halfway between 5 and 273 is 139.
To check that our answer is correct, we subtract 5 from 139 and subtract 139 from 273 and compare the two numbers:
139 - 5 = 134
273 - 139 = 134
As you can see, the halfway number is 134 higher than 5 and 134 lower than 273. Therefore, our halfway between answer of 139 above is correct.
Halfway Between
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Halfway Between 5 and 274
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