When you ask "What number is halfway between 47 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=47 and Y=400.
To find the number halfway between 47 and 400, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 400 into our formula, we get:
(47 + 400)/2 = 223.5
Thus, the number halfway between 47 and 400 is 223.5.
To check that our answer is correct, we subtract 47 from 223.5 and subtract 223.5 from 400 and compare the two numbers:
223.5 - 47 = 176.5
400 - 223.5 = 176.5
As you can see, the halfway number is 176.5 higher than 47 and 176.5 lower than 400. Therefore, our halfway between answer of 223.5 above is correct.
Halfway Between
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Halfway Between 47 and 401
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