
When you ask "What number is halfway between 8 and 150?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=150.

To find the number halfway between 8 and 150, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 150 into our formula, we get:
(8 + 150)/2 = 79
Thus, the number halfway between 8 and 150 is 79.
To check that our answer is correct, we subtract 8 from 79 and subtract 79 from 150 and compare the two numbers:
79 - 8 = 71
150 - 79 = 71
As you can see, the halfway number is 71 higher than 8 and 71 lower than 150. Therefore, our halfway between answer of 79 above is correct.
Halfway Between
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Halfway Between 8 and 151
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