When you ask "What number is halfway between 67 and 189?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=67 and Y=189.
To find the number halfway between 67 and 189, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 67 and 189 into our formula, we get:
(67 + 189)/2 = 128
Thus, the number halfway between 67 and 189 is 128.
To check that our answer is correct, we subtract 67 from 128 and subtract 128 from 189 and compare the two numbers:
128 - 67 = 61
189 - 128 = 61
As you can see, the halfway number is 61 higher than 67 and 61 lower than 189. Therefore, our halfway between answer of 128 above is correct.
Halfway Between
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Halfway Between 67 and 190
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