When you ask "What number is halfway between 17 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=17 and Y=149.
To find the number halfway between 17 and 149, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 149 into our formula, we get:
(17 + 149)/2 = 83
Thus, the number halfway between 17 and 149 is 83.
To check that our answer is correct, we subtract 17 from 83 and subtract 83 from 149 and compare the two numbers:
83 - 17 = 66
149 - 83 = 66
As you can see, the halfway number is 66 higher than 17 and 66 lower than 149. Therefore, our halfway between answer of 83 above is correct.
Halfway Between
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Halfway Between 17 and 150
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