When you ask "What number is halfway between 69 and 378?" 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=378.
To find the number halfway between 69 and 378, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 378 into our formula, we get:
(69 + 378)/2 = 223.5
Thus, the number halfway between 69 and 378 is 223.5.
To check that our answer is correct, we subtract 69 from 223.5 and subtract 223.5 from 378 and compare the two numbers:
223.5 - 69 = 154.5
378 - 223.5 = 154.5
As you can see, the halfway number is 154.5 higher than 69 and 154.5 lower than 378. Therefore, our halfway between answer of 223.5 above is correct.
Halfway Between
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Halfway Between 69 and 379
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