When you ask "What number is halfway between 68 and 135?" 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=135.
To find the number halfway between 68 and 135, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 135 into our formula, we get:
(68 + 135)/2 = 101.5
Thus, the number halfway between 68 and 135 is 101.5.
To check that our answer is correct, we subtract 68 from 101.5 and subtract 101.5 from 135 and compare the two numbers:
101.5 - 68 = 33.5
135 - 101.5 = 33.5
As you can see, the halfway number is 33.5 higher than 68 and 33.5 lower than 135. Therefore, our halfway between answer of 101.5 above is correct.
Halfway Between
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Halfway Between 68 and 136
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