When you ask "What number is halfway between 73 and 158?" 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=158.
To find the number halfway between 73 and 158, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 158 into our formula, we get:
(73 + 158)/2 = 115.5
Thus, the number halfway between 73 and 158 is 115.5.
To check that our answer is correct, we subtract 73 from 115.5 and subtract 115.5 from 158 and compare the two numbers:
115.5 - 73 = 42.5
158 - 115.5 = 42.5
As you can see, the halfway number is 42.5 higher than 73 and 42.5 lower than 158. Therefore, our halfway between answer of 115.5 above is correct.
Halfway Between
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Halfway Between 73 and 159
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