When you ask "What number is halfway between 73 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=73 and Y=400.
To find the number halfway between 73 and 400, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 400 into our formula, we get:
(73 + 400)/2 = 236.5
Thus, the number halfway between 73 and 400 is 236.5.
To check that our answer is correct, we subtract 73 from 236.5 and subtract 236.5 from 400 and compare the two numbers:
236.5 - 73 = 163.5
400 - 236.5 = 163.5
As you can see, the halfway number is 163.5 higher than 73 and 163.5 lower than 400. Therefore, our halfway between answer of 236.5 above is correct.
Halfway Between
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Halfway Between 73 and 401
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