When you ask "What number is halfway between 70 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=70 and Y=409.
To find the number halfway between 70 and 409, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 70 and 409 into our formula, we get:
(70 + 409)/2 = 239.5
Thus, the number halfway between 70 and 409 is 239.5.
To check that our answer is correct, we subtract 70 from 239.5 and subtract 239.5 from 409 and compare the two numbers:
239.5 - 70 = 169.5
409 - 239.5 = 169.5
As you can see, the halfway number is 169.5 higher than 70 and 169.5 lower than 409. Therefore, our halfway between answer of 239.5 above is correct.
Halfway Between
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Halfway Between 70 and 410
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