When you ask "What number is halfway between 79 and 158?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=79 and Y=158.
To find the number halfway between 79 and 158, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 158 into our formula, we get:
(79 + 158)/2 = 118.5
Thus, the number halfway between 79 and 158 is 118.5.
To check that our answer is correct, we subtract 79 from 118.5 and subtract 118.5 from 158 and compare the two numbers:
118.5 - 79 = 39.5
158 - 118.5 = 39.5
As you can see, the halfway number is 39.5 higher than 79 and 39.5 lower than 158. Therefore, our halfway between answer of 118.5 above is correct.
Halfway Between
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Halfway Between 79 and 159
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