When you ask "What number is halfway between 69 and 438?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=69 and Y=438.
To find the number halfway between 69 and 438, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 438 into our formula, we get:
(69 + 438)/2 = 253.5
Thus, the number halfway between 69 and 438 is 253.5.
To check that our answer is correct, we subtract 69 from 253.5 and subtract 253.5 from 438 and compare the two numbers:
253.5 - 69 = 184.5
438 - 253.5 = 184.5
As you can see, the halfway number is 184.5 higher than 69 and 184.5 lower than 438. Therefore, our halfway between answer of 253.5 above is correct.
Halfway Between
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Halfway Between 69 and 439
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