When you ask "What number is halfway between 5 and 290?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=5 and Y=290.
To find the number halfway between 5 and 290, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 5 and 290 into our formula, we get:
(5 + 290)/2 = 147.5
Thus, the number halfway between 5 and 290 is 147.5.
To check that our answer is correct, we subtract 5 from 147.5 and subtract 147.5 from 290 and compare the two numbers:
147.5 - 5 = 142.5
290 - 147.5 = 142.5
As you can see, the halfway number is 142.5 higher than 5 and 142.5 lower than 290. Therefore, our halfway between answer of 147.5 above is correct.
Halfway Between
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Halfway Between 5 and 291
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