When you ask "What number is halfway between 31 and 69?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=31 and Y=69.
To find the number halfway between 31 and 69, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 69 into our formula, we get:
(31 + 69)/2 = 50
Thus, the number halfway between 31 and 69 is 50.
To check that our answer is correct, we subtract 31 from 50 and subtract 50 from 69 and compare the two numbers:
50 - 31 = 19
69 - 50 = 19
As you can see, the halfway number is 19 higher than 31 and 19 lower than 69. Therefore, our halfway between answer of 50 above is correct.
Halfway Between
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Halfway Between 31 and 70
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