When you ask "What number is halfway between 73 and 520?" 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=520.
To find the number halfway between 73 and 520, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 520 into our formula, we get:
(73 + 520)/2 = 296.5
Thus, the number halfway between 73 and 520 is 296.5.
To check that our answer is correct, we subtract 73 from 296.5 and subtract 296.5 from 520 and compare the two numbers:
296.5 - 73 = 223.5
520 - 296.5 = 223.5
As you can see, the halfway number is 223.5 higher than 73 and 223.5 lower than 520. Therefore, our halfway between answer of 296.5 above is correct.
Halfway Between
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Halfway Between 73 and 521
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