When you ask "What number is halfway between 7 and 409?" 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=409.
To find the number halfway between 7 and 409, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 409 into our formula, we get:
(7 + 409)/2 = 208
Thus, the number halfway between 7 and 409 is 208.
To check that our answer is correct, we subtract 7 from 208 and subtract 208 from 409 and compare the two numbers:
208 - 7 = 201
409 - 208 = 201
As you can see, the halfway number is 201 higher than 7 and 201 lower than 409. Therefore, our halfway between answer of 208 above is correct.
Halfway Between
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Halfway Between 7 and 410
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