When you ask "What number is halfway between 68 and 73?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=68 and Y=73.
To find the number halfway between 68 and 73, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 73 into our formula, we get:
(68 + 73)/2 = 70.5
Thus, the number halfway between 68 and 73 is 70.5.
To check that our answer is correct, we subtract 68 from 70.5 and subtract 70.5 from 73 and compare the two numbers:
70.5 - 68 = 2.5
73 - 70.5 = 2.5
As you can see, the halfway number is 2.5 higher than 68 and 2.5 lower than 73. Therefore, our halfway between answer of 70.5 above is correct.
Halfway Between
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Halfway Between 68 and 74
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