When you ask "What number is halfway between 78 and 146?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=78 and Y=146.
To find the number halfway between 78 and 146, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 78 and 146 into our formula, we get:
(78 + 146)/2 = 112
Thus, the number halfway between 78 and 146 is 112.
To check that our answer is correct, we subtract 78 from 112 and subtract 112 from 146 and compare the two numbers:
112 - 78 = 34
146 - 112 = 34
As you can see, the halfway number is 34 higher than 78 and 34 lower than 146. Therefore, our halfway between answer of 112 above is correct.
Halfway Between
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Halfway Between 78 and 147
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