When you ask "What number is halfway between 7 and 397?" 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=397.
To find the number halfway between 7 and 397, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 397 into our formula, we get:
(7 + 397)/2 = 202
Thus, the number halfway between 7 and 397 is 202.
To check that our answer is correct, we subtract 7 from 202 and subtract 202 from 397 and compare the two numbers:
202 - 7 = 195
397 - 202 = 195
As you can see, the halfway number is 195 higher than 7 and 195 lower than 397. Therefore, our halfway between answer of 202 above is correct.
Halfway Between
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Halfway Between 7 and 398
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