When you ask "What number is halfway between 72 and 428?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=72 and Y=428.
To find the number halfway between 72 and 428, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 428 into our formula, we get:
(72 + 428)/2 = 250
Thus, the number halfway between 72 and 428 is 250.
To check that our answer is correct, we subtract 72 from 250 and subtract 250 from 428 and compare the two numbers:
250 - 72 = 178
428 - 250 = 178
As you can see, the halfway number is 178 higher than 72 and 178 lower than 428. Therefore, our halfway between answer of 250 above is correct.
Halfway Between
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Halfway Between 72 and 429
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