When you ask "What number is halfway between 49 and 400?" 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=400.
To find the number halfway between 49 and 400, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 400 into our formula, we get:
(49 + 400)/2 = 224.5
Thus, the number halfway between 49 and 400 is 224.5.
To check that our answer is correct, we subtract 49 from 224.5 and subtract 224.5 from 400 and compare the two numbers:
224.5 - 49 = 175.5
400 - 224.5 = 175.5
As you can see, the halfway number is 175.5 higher than 49 and 175.5 lower than 400. Therefore, our halfway between answer of 224.5 above is correct.
Halfway Between
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Halfway Between 49 and 401
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