When you ask "What number is halfway between 18 and 971?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=18 and Y=971.
To find the number halfway between 18 and 971, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 971 into our formula, we get:
(18 + 971)/2 = 494.5
Thus, the number halfway between 18 and 971 is 494.5.
To check that our answer is correct, we subtract 18 from 494.5 and subtract 494.5 from 971 and compare the two numbers:
494.5 - 18 = 476.5
971 - 494.5 = 476.5
As you can see, the halfway number is 476.5 higher than 18 and 476.5 lower than 971. Therefore, our halfway between answer of 494.5 above is correct.
Halfway Between
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Halfway Between 18 and 972
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