When you ask "What number is halfway between 7 and 249?" 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=249.
To find the number halfway between 7 and 249, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 249 into our formula, we get:
(7 + 249)/2 = 128
Thus, the number halfway between 7 and 249 is 128.
To check that our answer is correct, we subtract 7 from 128 and subtract 128 from 249 and compare the two numbers:
128 - 7 = 121
249 - 128 = 121
As you can see, the halfway number is 121 higher than 7 and 121 lower than 249. Therefore, our halfway between answer of 128 above is correct.
Halfway Between
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Halfway Between 7 and 250
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