When you ask "What number is halfway between 7 and 424?" 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=424.
To find the number halfway between 7 and 424, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 424 into our formula, we get:
(7 + 424)/2 = 215.5
Thus, the number halfway between 7 and 424 is 215.5.
To check that our answer is correct, we subtract 7 from 215.5 and subtract 215.5 from 424 and compare the two numbers:
215.5 - 7 = 208.5
424 - 215.5 = 208.5
As you can see, the halfway number is 208.5 higher than 7 and 208.5 lower than 424. Therefore, our halfway between answer of 215.5 above is correct.
Halfway Between
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Halfway Between 7 and 425
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