When you ask "What number is halfway between 71 and 145?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=71 and Y=145.
To find the number halfway between 71 and 145, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 71 and 145 into our formula, we get:
(71 + 145)/2 = 108
Thus, the number halfway between 71 and 145 is 108.
To check that our answer is correct, we subtract 71 from 108 and subtract 108 from 145 and compare the two numbers:
108 - 71 = 37
145 - 108 = 37
As you can see, the halfway number is 37 higher than 71 and 37 lower than 145. Therefore, our halfway between answer of 108 above is correct.
Halfway Between
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Halfway Between 71 and 146
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