When you ask "What number is halfway between 38 and 138?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=38 and Y=138.
To find the number halfway between 38 and 138, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 38 and 138 into our formula, we get:
(38 + 138)/2 = 88
Thus, the number halfway between 38 and 138 is 88.
To check that our answer is correct, we subtract 38 from 88 and subtract 88 from 138 and compare the two numbers:
88 - 38 = 50
138 - 88 = 50
As you can see, the halfway number is 50 higher than 38 and 50 lower than 138. Therefore, our halfway between answer of 88 above is correct.
Halfway Between
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Halfway Between 38 and 139
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