When you ask "What number is halfway between 21 and 368?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=21 and Y=368.
To find the number halfway between 21 and 368, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 21 and 368 into our formula, we get:
(21 + 368)/2 = 194.5
Thus, the number halfway between 21 and 368 is 194.5.
To check that our answer is correct, we subtract 21 from 194.5 and subtract 194.5 from 368 and compare the two numbers:
194.5 - 21 = 173.5
368 - 194.5 = 173.5
As you can see, the halfway number is 173.5 higher than 21 and 173.5 lower than 368. Therefore, our halfway between answer of 194.5 above is correct.
Halfway Between
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Halfway Between 21 and 369
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