When you ask "What number is halfway between 4 and 100?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=4 and Y=100.
To find the number halfway between 4 and 100, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 100 into our formula, we get:
(4 + 100)/2 = 52
Thus, the number halfway between 4 and 100 is 52.
To check that our answer is correct, we subtract 4 from 52 and subtract 52 from 100 and compare the two numbers:
52 - 4 = 48
100 - 52 = 48
As you can see, the halfway number is 48 higher than 4 and 48 lower than 100. Therefore, our halfway between answer of 52 above is correct.
Halfway Between
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Halfway Between 4 and 101
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