When you ask "What number is halfway between 73 and 142?" 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=142.
To find the number halfway between 73 and 142, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 142 into our formula, we get:
(73 + 142)/2 = 107.5
Thus, the number halfway between 73 and 142 is 107.5.
To check that our answer is correct, we subtract 73 from 107.5 and subtract 107.5 from 142 and compare the two numbers:
107.5 - 73 = 34.5
142 - 107.5 = 34.5
As you can see, the halfway number is 34.5 higher than 73 and 34.5 lower than 142. Therefore, our halfway between answer of 107.5 above is correct.
Halfway Between
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Halfway Between 73 and 143
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