When you ask "What number is halfway between 17 and 152?" 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=152.
To find the number halfway between 17 and 152, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 152 into our formula, we get:
(17 + 152)/2 = 84.5
Thus, the number halfway between 17 and 152 is 84.5.
To check that our answer is correct, we subtract 17 from 84.5 and subtract 84.5 from 152 and compare the two numbers:
84.5 - 17 = 67.5
152 - 84.5 = 67.5
As you can see, the halfway number is 67.5 higher than 17 and 67.5 lower than 152. Therefore, our halfway between answer of 84.5 above is correct.
Halfway Between
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Halfway Between 17 and 153
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