When you ask "What number is halfway between 7 and 130?" 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=130.
To find the number halfway between 7 and 130, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 130 into our formula, we get:
(7 + 130)/2 = 68.5
Thus, the number halfway between 7 and 130 is 68.5.
To check that our answer is correct, we subtract 7 from 68.5 and subtract 68.5 from 130 and compare the two numbers:
68.5 - 7 = 61.5
130 - 68.5 = 61.5
As you can see, the halfway number is 61.5 higher than 7 and 61.5 lower than 130. Therefore, our halfway between answer of 68.5 above is correct.
Halfway Between
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Halfway Between 7 and 131
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