When you ask "What number is halfway between 1 and 279?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=279.
To find the number halfway between 1 and 279, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 279 into our formula, we get:
(1 + 279)/2 = 140
Thus, the number halfway between 1 and 279 is 140.
To check that our answer is correct, we subtract 1 from 140 and subtract 140 from 279 and compare the two numbers:
140 - 1 = 139
279 - 140 = 139
As you can see, the halfway number is 139 higher than 1 and 139 lower than 279. Therefore, our halfway between answer of 140 above is correct.
Halfway Between
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Halfway Between 1 and 280
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