When you ask "What number is halfway between 73 and 154?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=73 and Y=154.
To find the number halfway between 73 and 154, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 154 into our formula, we get:
(73 + 154)/2 = 113.5
Thus, the number halfway between 73 and 154 is 113.5.
To check that our answer is correct, we subtract 73 from 113.5 and subtract 113.5 from 154 and compare the two numbers:
113.5 - 73 = 40.5
154 - 113.5 = 40.5
As you can see, the halfway number is 40.5 higher than 73 and 40.5 lower than 154. Therefore, our halfway between answer of 113.5 above is correct.
Halfway Between
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Halfway Between 73 and 155
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