When you ask "What number is halfway between 55 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=55 and Y=146.
To find the number halfway between 55 and 146, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 55 and 146 into our formula, we get:
(55 + 146)/2 = 100.5
Thus, the number halfway between 55 and 146 is 100.5.
To check that our answer is correct, we subtract 55 from 100.5 and subtract 100.5 from 146 and compare the two numbers:
100.5 - 55 = 45.5
146 - 100.5 = 45.5
As you can see, the halfway number is 45.5 higher than 55 and 45.5 lower than 146. Therefore, our halfway between answer of 100.5 above is correct.
Halfway Between
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Halfway Between 55 and 147
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