When you ask "What number is halfway between 1 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=1 and Y=158.
To find the number halfway between 1 and 158, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 158 into our formula, we get:
(1 + 158)/2 = 79.5
Thus, the number halfway between 1 and 158 is 79.5.
To check that our answer is correct, we subtract 1 from 79.5 and subtract 79.5 from 158 and compare the two numbers:
79.5 - 1 = 78.5
158 - 79.5 = 78.5
As you can see, the halfway number is 78.5 higher than 1 and 78.5 lower than 158. Therefore, our halfway between answer of 79.5 above is correct.
Halfway Between
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Halfway Between 1 and 159
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