When you ask "What number is halfway between 17 and 450?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=17 and Y=450.
To find the number halfway between 17 and 450, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 450 into our formula, we get:
(17 + 450)/2 = 233.5
Thus, the number halfway between 17 and 450 is 233.5.
To check that our answer is correct, we subtract 17 from 233.5 and subtract 233.5 from 450 and compare the two numbers:
233.5 - 17 = 216.5
450 - 233.5 = 216.5
As you can see, the halfway number is 216.5 higher than 17 and 216.5 lower than 450. Therefore, our halfway between answer of 233.5 above is correct.
Halfway Between
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Halfway Between 17 and 451
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