When you ask "What number is halfway between 40 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=40 and Y=170.
To find the number halfway between 40 and 170, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 40 and 170 into our formula, we get:
(40 + 170)/2 = 105
Thus, the number halfway between 40 and 170 is 105.
To check that our answer is correct, we subtract 40 from 105 and subtract 105 from 170 and compare the two numbers:
105 - 40 = 65
170 - 105 = 65
As you can see, the halfway number is 65 higher than 40 and 65 lower than 170. Therefore, our halfway between answer of 105 above is correct.
Halfway Between
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Halfway Between 40 and 171
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