When you ask "What number is halfway between 12 and 149?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=12 and Y=149.
To find the number halfway between 12 and 149, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 12 and 149 into our formula, we get:
(12 + 149)/2 = 80.5
Thus, the number halfway between 12 and 149 is 80.5.
To check that our answer is correct, we subtract 12 from 80.5 and subtract 80.5 from 149 and compare the two numbers:
80.5 - 12 = 68.5
149 - 80.5 = 68.5
As you can see, the halfway number is 68.5 higher than 12 and 68.5 lower than 149. Therefore, our halfway between answer of 80.5 above is correct.
Halfway Between
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Halfway Between 12 and 150
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