When you ask "What number is halfway between 49 and 151?" 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=151.
To find the number halfway between 49 and 151, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 151 into our formula, we get:
(49 + 151)/2 = 100
Thus, the number halfway between 49 and 151 is 100.
To check that our answer is correct, we subtract 49 from 100 and subtract 100 from 151 and compare the two numbers:
100 - 49 = 51
151 - 100 = 51
As you can see, the halfway number is 51 higher than 49 and 51 lower than 151. Therefore, our halfway between answer of 100 above is correct.
Halfway Between
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Halfway Between 49 and 152
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