When you ask "What number is halfway between 7 and 212?" 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=212.
To find the number halfway between 7 and 212, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 212 into our formula, we get:
(7 + 212)/2 = 109.5
Thus, the number halfway between 7 and 212 is 109.5.
To check that our answer is correct, we subtract 7 from 109.5 and subtract 109.5 from 212 and compare the two numbers:
109.5 - 7 = 102.5
212 - 109.5 = 102.5
As you can see, the halfway number is 102.5 higher than 7 and 102.5 lower than 212. Therefore, our halfway between answer of 109.5 above is correct.
Halfway Between
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Halfway Between 7 and 213
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