When you ask "What number is halfway between 57 and 170?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=57 and Y=170.
To find the number halfway between 57 and 170, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 170 into our formula, we get:
(57 + 170)/2 = 113.5
Thus, the number halfway between 57 and 170 is 113.5.
To check that our answer is correct, we subtract 57 from 113.5 and subtract 113.5 from 170 and compare the two numbers:
113.5 - 57 = 56.5
170 - 113.5 = 56.5
As you can see, the halfway number is 56.5 higher than 57 and 56.5 lower than 170. Therefore, our halfway between answer of 113.5 above is correct.
Halfway Between
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Halfway Between 57 and 171
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