When you ask "What number is halfway between 10 and 245?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=10 and Y=245.
To find the number halfway between 10 and 245, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 10 and 245 into our formula, we get:
(10 + 245)/2 = 127.5
Thus, the number halfway between 10 and 245 is 127.5.
To check that our answer is correct, we subtract 10 from 127.5 and subtract 127.5 from 245 and compare the two numbers:
127.5 - 10 = 117.5
245 - 127.5 = 117.5
As you can see, the halfway number is 117.5 higher than 10 and 117.5 lower than 245. Therefore, our halfway between answer of 127.5 above is correct.
Halfway Between
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Halfway Between 10 and 246
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