When you ask "What number is halfway between 97 and 521?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=97 and Y=521.
To find the number halfway between 97 and 521, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 97 and 521 into our formula, we get:
(97 + 521)/2 = 309
Thus, the number halfway between 97 and 521 is 309.
To check that our answer is correct, we subtract 97 from 309 and subtract 309 from 521 and compare the two numbers:
309 - 97 = 212
521 - 309 = 212
As you can see, the halfway number is 212 higher than 97 and 212 lower than 521. Therefore, our halfway between answer of 309 above is correct.
Halfway Between
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Halfway Between 97 and 522
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