When you ask "What number is halfway between 88 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=88 and Y=130.
To find the number halfway between 88 and 130, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 88 and 130 into our formula, we get:
(88 + 130)/2 = 109
Thus, the number halfway between 88 and 130 is 109.
To check that our answer is correct, we subtract 88 from 109 and subtract 109 from 130 and compare the two numbers:
109 - 88 = 21
130 - 109 = 21
As you can see, the halfway number is 21 higher than 88 and 21 lower than 130. Therefore, our halfway between answer of 109 above is correct.
Halfway Between
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Halfway Between 88 and 131
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