When you ask "What number is halfway between 7 and 492?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=492.
To find the number halfway between 7 and 492, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 492 into our formula, we get:
(7 + 492)/2 = 249.5
Thus, the number halfway between 7 and 492 is 249.5.
To check that our answer is correct, we subtract 7 from 249.5 and subtract 249.5 from 492 and compare the two numbers:
249.5 - 7 = 242.5
492 - 249.5 = 242.5
As you can see, the halfway number is 242.5 higher than 7 and 242.5 lower than 492. Therefore, our halfway between answer of 249.5 above is correct.
Halfway Between
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Halfway Between 7 and 493
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