When you ask "What number is halfway between 49 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=49 and Y=100.
To find the number halfway between 49 and 100, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 100 into our formula, we get:
(49 + 100)/2 = 74.5
Thus, the number halfway between 49 and 100 is 74.5.
To check that our answer is correct, we subtract 49 from 74.5 and subtract 74.5 from 100 and compare the two numbers:
74.5 - 49 = 25.5
100 - 74.5 = 25.5
As you can see, the halfway number is 25.5 higher than 49 and 25.5 lower than 100. Therefore, our halfway between answer of 74.5 above is correct.
Halfway Between
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Halfway Between 49 and 101
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