When you ask "What number is halfway between 3 and 152?" 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=152.
To find the number halfway between 3 and 152, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 152 into our formula, we get:
(3 + 152)/2 = 77.5
Thus, the number halfway between 3 and 152 is 77.5.
To check that our answer is correct, we subtract 3 from 77.5 and subtract 77.5 from 152 and compare the two numbers:
77.5 - 3 = 74.5
152 - 77.5 = 74.5
As you can see, the halfway number is 74.5 higher than 3 and 74.5 lower than 152. Therefore, our halfway between answer of 77.5 above is correct.
Halfway Between
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Halfway Between 3 and 153
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