When you ask "What number is halfway between 3 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=3 and Y=170.
To find the number halfway between 3 and 170, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 170 into our formula, we get:
(3 + 170)/2 = 86.5
Thus, the number halfway between 3 and 170 is 86.5.
To check that our answer is correct, we subtract 3 from 86.5 and subtract 86.5 from 170 and compare the two numbers:
86.5 - 3 = 83.5
170 - 86.5 = 83.5
As you can see, the halfway number is 83.5 higher than 3 and 83.5 lower than 170. Therefore, our halfway between answer of 86.5 above is correct.
Halfway Between
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Halfway Between 3 and 171
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