When you ask "What number is halfway between 73 and 842?" 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=842.
To find the number halfway between 73 and 842, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 842 into our formula, we get:
(73 + 842)/2 = 457.5
Thus, the number halfway between 73 and 842 is 457.5.
To check that our answer is correct, we subtract 73 from 457.5 and subtract 457.5 from 842 and compare the two numbers:
457.5 - 73 = 384.5
842 - 457.5 = 384.5
As you can see, the halfway number is 384.5 higher than 73 and 384.5 lower than 842. Therefore, our halfway between answer of 457.5 above is correct.
Halfway Between
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Halfway Between 73 and 843
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