When you ask "What number is halfway between 7 and 998?" 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=998.
To find the number halfway between 7 and 998, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 998 into our formula, we get:
(7 + 998)/2 = 502.5
Thus, the number halfway between 7 and 998 is 502.5.
To check that our answer is correct, we subtract 7 from 502.5 and subtract 502.5 from 998 and compare the two numbers:
502.5 - 7 = 495.5
998 - 502.5 = 495.5
As you can see, the halfway number is 495.5 higher than 7 and 495.5 lower than 998. Therefore, our halfway between answer of 502.5 above is correct.
Halfway Between
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Halfway Between 7 and 999
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