When you ask "What number is halfway between 6 and 128?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=6 and Y=128.
To find the number halfway between 6 and 128, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 6 and 128 into our formula, we get:
(6 + 128)/2 = 67
Thus, the number halfway between 6 and 128 is 67.
To check that our answer is correct, we subtract 6 from 67 and subtract 67 from 128 and compare the two numbers:
67 - 6 = 61
128 - 67 = 61
As you can see, the halfway number is 61 higher than 6 and 61 lower than 128. Therefore, our halfway between answer of 67 above is correct.
Halfway Between
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Halfway Between 6 and 129
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