When you ask "What number is halfway between 3 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=3 and Y=145.
To find the number halfway between 3 and 145, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 145 into our formula, we get:
(3 + 145)/2 = 74
Thus, the number halfway between 3 and 145 is 74.
To check that our answer is correct, we subtract 3 from 74 and subtract 74 from 145 and compare the two numbers:
74 - 3 = 71
145 - 74 = 71
As you can see, the halfway number is 71 higher than 3 and 71 lower than 145. Therefore, our halfway between answer of 74 above is correct.
Halfway Between
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Halfway Between 3 and 146
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