When you ask "What number is halfway between 7 and 217?" 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=217.
To find the number halfway between 7 and 217, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 217 into our formula, we get:
(7 + 217)/2 = 112
Thus, the number halfway between 7 and 217 is 112.
To check that our answer is correct, we subtract 7 from 112 and subtract 112 from 217 and compare the two numbers:
112 - 7 = 105
217 - 112 = 105
As you can see, the halfway number is 105 higher than 7 and 105 lower than 217. Therefore, our halfway between answer of 112 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 7 and 218
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